<XBRL>
<!-- Generated by iC(tm) - CompSci Interactive Converter - http://www.compsciresources.com -->
<!-- Created: Wed Aug 08 20:17:46 UTC 2012 -->
<xs:schema xmlns:xbrli="http://www.xbrl.org/2003/instance" xmlns:num="http://www.xbrl.org/dtr/type/numeric" targetNamespace="http://www.intest.com/20120630" xmlns:xs="http://www.w3.org/2001/XMLSchema" xmlns:nonnum="http://www.xbrl.org/dtr/type/non-numeric" xmlns:us-types="http://fasb.org/us-types/2012-01-31" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:link="http://www.xbrl.org/2003/linkbase" elementFormDefault="qualified" xmlns:intt="http://www.intest.com/20120630" xmlns:xbrldt="http://xbrl.org/2005/xbrldt">
  <xs:annotation>
    <xs:appinfo>
      <link:linkbaseRef xlink:type="simple" xlink:href="intt-20120630_lab.xml" xlink:arcrole="http://www.w3.org/1999/xlink/properties/linkbase" xlink:role="http://www.xbrl.org/2003/role/labelLinkbaseRef"/>
      <link:linkbaseRef xlink:type="simple" xlink:href="intt-20120630_pre.xml" xlink:arcrole="http://www.w3.org/1999/xlink/properties/linkbase" xlink:role="http://www.xbrl.org/2003/role/presentationLinkbaseRef"/>
      <link:linkbaseRef xlink:type="simple" xlink:href="intt-20120630_def.xml" xlink:arcrole="http://www.w3.org/1999/xlink/properties/linkbase" xlink:role="http://www.xbrl.org/2003/role/definitionLinkbaseRef"/>
      <link:linkbaseRef xlink:type="simple" xlink:href="intt-20120630_cal.xml" xlink:arcrole="http://www.w3.org/1999/xlink/properties/linkbase" xlink:role="http://www.xbrl.org/2003/role/calculationLinkbaseRef"/>
      <link:roleType roleURI="http://www.intest.com/role/ConsolidatedBalanceSheet" id="intt_ConsolidatedBalanceSheet">
        <link:definition>001 - Statement - Consolidated Balance Sheets (Unaudited)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.intest.com/role/ConsolidatedBalanceSheet_Parentheticals" id="intt_ConsolidatedBalanceSheet_Parentheticals">
        <link:definition>002 - Statement - Consolidated Balance Sheets (Unaudited) (Parentheticals)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.intest.com/role/ConsolidatedIncomeStatement" id="intt_ConsolidatedIncomeStatement">
        <link:definition>003 - Statement - Consolidated Statements of Operations (Unaudited)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.intest.com/role/ConsolidatedComprehensiveIncome" id="intt_ConsolidatedComprehensiveIncome">
        <link:definition>004 - Statement - Consolidated Statements of Comprehensive Earnings (Unaudited)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.intest.com/role/ShareholdersEquityType2or3" id="intt_ShareholdersEquityType2or3">
        <link:definition>005 - Statement - Consolidated Statement of Stockholders' Equity (Unaudited)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.intest.com/role/ShareholdersEquityType2or3_Parentheticals" id="intt_ShareholdersEquityType2or3_Parentheticals">
        <link:definition>006 - Statement - Consolidated Statement of Stockholders' Equity (Unaudited) (Parentheticals)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.intest.com/role/ConsolidatedCashFlow" id="intt_ConsolidatedCashFlow">
        <link:definition>007 - Statement - Consolidated Statements of Cash Flows (Unaudited)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.intest.com/role/Note" id="intt_Note">
        <link:definition>008 - Disclosure - Note 1 - Nature of Operations</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.intest.com/role/Note0" id="intt_Note0">
        <link:definition>009 - Disclosure - Note 2 - Summary of Significant Accounting Policies</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.intest.com/role/Note00" id="intt_Note00">
        <link:definition>010 - Disclosure - Note 3 - Acquisition</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.intest.com/role/Note000" id="intt_Note000">
        <link:definition>011 - Disclosure - Note 4 - Goodwill and Intangible Assets</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.intest.com/role/Note0000" id="intt_Note0000">
        <link:definition>012 - Disclosure - Note 5 - Restructuring and Other Charges</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.intest.com/role/Note00000" id="intt_Note00000">
        <link:definition>013 - Disclosure - Note 6 - Major Customers</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.intest.com/role/Note000000" id="intt_Note000000">
        <link:definition>014 - Disclosure - Note 7 - Inventories</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.intest.com/role/Note0000000" id="intt_Note0000000">
        <link:definition>015 - Disclosure - Note 8 - Debt</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.intest.com/role/Note00000000" id="intt_Note00000000">
        <link:definition>016 - Disclosure - Note 9 - Leasehold Improvements and Deferred Rent</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.intest.com/role/Note000000000" id="intt_Note000000000">
        <link:definition>017 - Disclosure - Note 10 - Guarantees</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.intest.com/role/Note0000000000" id="intt_Note0000000000">
        <link:definition>018 - Disclosure - Note 11 - Stock-Based Compensation</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.intest.com/role/Note00000000000" id="intt_Note00000000000">
        <link:definition>019 - Disclosure - Note 12 - Employee Benefit Plans</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.intest.com/role/Note000000000000" id="intt_Note000000000000">
        <link:definition>020 - Disclosure - Note 13 - Segment Information</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.intest.com/role/AccountingPoliciesByPolicy" id="intt_AccountingPoliciesByPolicy">
        <link:definition>021 - Disclosure - Accounting Policies, by Policy (Policies)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.intest.com/role/NoteTables" id="intt_NoteTables">
        <link:definition>022 - Disclosure - Note 2 - Summary of Significant Accounting Policies (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.intest.com/role/NoteTables0" id="intt_NoteTables0">
        <link:definition>023 - Disclosure - Note 3 - Acquisition (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.intest.com/role/NoteTables00" id="intt_NoteTables00">
        <link:definition>024 - Disclosure - Note 4 - Goodwill and Intangible Assets (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.intest.com/role/NoteTables000" id="intt_NoteTables000">
        <link:definition>025 - Disclosure - Note 5 - Restructuring and Other Charges (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.intest.com/role/NoteTables0000" id="intt_NoteTables0000">
        <link:definition>026 - Disclosure - Note 7 - Inventories (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.intest.com/role/NoteTables00000" id="intt_NoteTables00000">
        <link:definition>027 - Disclosure - Note 8 - Debt (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.intest.com/role/NoteTables000000" id="intt_NoteTables000000">
        <link:definition>028 - Disclosure - Note 10 - Guarantees (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.intest.com/role/NoteTables0000000" id="intt_NoteTables0000000">
        <link:definition>029 - Disclosure - Note 11 - Stock-Based Compensation (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.intest.com/role/NoteTables00000000" id="intt_NoteTables00000000">
        <link:definition>030 - Disclosure - Note 13 - Segment Information (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.intest.com/role/NoteDetail" id="intt_NoteDetail">
        <link:definition>031 - Disclosure - Note 1 - Nature of Operations (Detail)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.intest.com/role/NoteDetail0" id="intt_NoteDetail0">
        <link:definition>032 - Disclosure - Note 2 - Summary of Significant Accounting Policies (Detail)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.intest.com/role/WeightedAverageCommonSharesTable" id="intt_WeightedAverageCommonSharesTable">
        <link:definition>033 - Disclosure - Note 2 - Summary of Significant Accounting Policies (Detail) - Weighted Average Common Shares</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.intest.com/role/NoteDetail00" id="intt_NoteDetail00">
        <link:definition>034 - Disclosure - Note 3 - Acquisition (Detail)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.intest.com/role/AllocationofthePurchasePriceTable" id="intt_AllocationofthePurchasePriceTable">
        <link:definition>035 - Disclosure - Note 3 - Acquisition (Detail) - Allocation of the Purchase Price:</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.intest.com/role/FiniteLivedIntangibleAssetsAcquiredwithAcquisitionofThermonicsTable" id="intt_FiniteLivedIntangibleAssetsAcquiredwithAcquisitionofThermonicsTable">
        <link:definition>036 - Disclosure - Note 3 - Acquisition (Detail) - Finite-Lived Intangible Assets Acquired with Acquisition of Thermonics</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.intest.com/role/ProformaAcquisitionTable" id="intt_ProformaAcquisitionTable">
        <link:definition>037 - Disclosure - Note 3 - Acquisition (Detail) - Proforma Acquisition</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.intest.com/role/NoteDetail000" id="intt_NoteDetail000">
        <link:definition>038 - Disclosure - Note 4 - Goodwill and Intangible Assets (Detail)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.intest.com/role/ChangesintheAmountoftheCarryingValueofGoodwillTable" id="intt_ChangesintheAmountoftheCarryingValueofGoodwillTable">
        <link:definition>039 - Disclosure - Note 4 - Goodwill and Intangible Assets (Detail) - Changes in the Amount of the Carrying Value of Goodwill</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.intest.com/role/FurtherDetailAboutIntangibleAssetsTable" id="intt_FurtherDetailAboutIntangibleAssetsTable">
        <link:definition>040 - Disclosure - Note 4 - Goodwill and Intangible Assets (Detail) - Further Detail About Intangible Assets</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.intest.com/role/EstimatedUsefulLivesofFiniteLivedIntangibleAssetsTable" id="intt_EstimatedUsefulLivesofFiniteLivedIntangibleAssetsTable">
        <link:definition>041 - Disclosure - Note 4 - Goodwill and Intangible Assets (Detail) - Estimated Useful Lives of Finite Lived Intangible Assets</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.intest.com/role/ChangesintheAmountoftheCarryingValueofFiniteLivedIntangibleAssetsTable" id="intt_ChangesintheAmountoftheCarryingValueofFiniteLivedIntangibleAssetsTable">
        <link:definition>042 - Disclosure - Note 4 - Goodwill and Intangible Assets (Detail) - Changes in the Amount of the Carrying Value of Finite-Lived Intangible Assets</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
      </link:roleType>
<!-- [WMV3][XcpuxYn59dz7vgYynUDuwG7r97K2jUTysl7vcz0lJt8UCLPdYZl35nXbOCDIyGTqjj7vULdxIqrcqOqSOcYmn8meCMXSYx/SxdL/WCqozTyMXtoRvtfPJvnhoWoer6S91xInc9+H1rNKHacuxhAAtGdFtwDTl5onIYR7IB9NiBTk3QttNfBhoQATXIqC3jS3dsZT2QrEmxe3cqdsCxUO7qti45ekkjTldYKlX40kySU=] CSR-->
      <link:roleType roleURI="http://www.intest.com/role/FutureAmortizationExpenseTable" id="intt_FutureAmortizationExpenseTable">
        <link:definition>043 - Disclosure - Note 4 - Goodwill and Intangible Assets (Detail) - Future Amortization Expense</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.intest.com/role/NoteDetail0000" id="intt_NoteDetail0000">
        <link:definition>044 - Disclosure - Note 5 - Restructuring and Other Charges (Detail)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.intest.com/role/LiabilityforRestructuringandOtherChargesTable" id="intt_LiabilityforRestructuringandOtherChargesTable">
        <link:definition>045 - Disclosure - Note 5 - Restructuring and Other Charges (Detail) - Liability for Restructuring and Other Charges</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.intest.com/role/NoteDetail00000" id="intt_NoteDetail00000">
        <link:definition>046 - Disclosure - Note 6 - Major Customers (Detail)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.intest.com/role/NoteDetail000000" id="intt_NoteDetail000000">
        <link:definition>047 - Disclosure - Note 7 - Inventories (Detail)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.intest.com/role/InventoriesTable" id="intt_InventoriesTable">
        <link:definition>048 - Disclosure - Note 7 - Inventories (Detail) - Inventories</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.intest.com/role/NoteDetail0000000" id="intt_NoteDetail0000000">
        <link:definition>049 - Disclosure - Note 8 - Debt (Detail)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.intest.com/role/OutstandingLettersofCreditTable" id="intt_OutstandingLettersofCreditTable">
        <link:definition>050 - Disclosure - Note 8 - Debt (Detail) - Outstanding Letters of Credit</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.intest.com/role/NoteDetail00000000" id="intt_NoteDetail00000000">
        <link:definition>051 - Disclosure - Note 9 - Leasehold Improvements and Deferred Rent (Detail)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.intest.com/role/NoteDetail000000000" id="intt_NoteDetail000000000">
        <link:definition>052 - Disclosure - Note 10 - Guarantees (Detail)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.intest.com/role/WarrantyLiabilityTable" id="intt_WarrantyLiabilityTable">
        <link:definition>053 - Disclosure - Note 10 - Guarantees (Detail) - Warranty Liability</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.intest.com/role/NoteDetail0000000000" id="intt_NoteDetail0000000000">
        <link:definition>054 - Disclosure - Note 11 - Stock-Based Compensation (Detail)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.intest.com/role/AllocationofShareBasedCompensationExpenseTable" id="intt_AllocationofShareBasedCompensationExpenseTable">
        <link:definition>055 - Disclosure - Note 11 - Stock-Based Compensation (Detail) - Allocation of Share-Based Compensation Expense</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.intest.com/role/NonvestedSharesTable" id="intt_NonvestedSharesTable">
        <link:definition>056 - Disclosure - Note 11 - Stock-Based Compensation (Detail) - Nonvested Shares</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.intest.com/role/StockOptionActivityTable" id="intt_StockOptionActivityTable">
        <link:definition>057 - Disclosure - Note 11 - Stock-Based Compensation (Detail) - Stock Option Activity</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.intest.com/role/NoteDetail00000000000" id="intt_NoteDetail00000000000">
        <link:definition>058 - Disclosure - Note 12 - Employee Benefit Plans (Detail)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.intest.com/role/NoteDetail000000000000" id="intt_NoteDetail000000000000">
        <link:definition>059 - Disclosure - Note 13 - Segment Information (Detail)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.intest.com/role/SegmentInformationTable" id="intt_SegmentInformationTable">
        <link:definition>060 - Disclosure - Note 13 - Segment Information (Detail) - Segment Information</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.intest.com/role/SegmentInformationIdentifiableAssetsLongLivedAssetsTable" id="intt_SegmentInformationIdentifiableAssetsLongLivedAssetsTable">
        <link:definition>061 - Disclosure - Note 13 - Segment Information (Detail) - Segment Information Identifiable Assets &amp; Long Lived Assets</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.intest.com/role/DocumentAndEntityInformation" id="DocumentAndEntityInformation">
        <link:definition>000 - Disclosure - Document And Entity Information</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
      </link:roleType>
    </xs:appinfo>
  </xs:annotation>
  <xs:import namespace="http://www.xbrl.org/2003/instance" schemaLocation="http://www.xbrl.org/2003/xbrl-instance-2003-12-31.xsd"/>
  <xs:import namespace="http://www.xbrl.org/2003/linkbase" schemaLocation="http://www.xbrl.org/2003/xbrl-linkbase-2003-12-31.xsd"/>
  <xs:import namespace="http://fasb.org/us-types/2012-01-31" schemaLocation="http://xbrl.fasb.org/us-gaap/2012/elts/us-types-2012-01-31.xsd"/>
  <xs:import namespace="http://www.xbrl.org/dtr/type/numeric" schemaLocation="http://www.xbrl.org/dtr/type/numeric-2009-12-16.xsd"/>
  <xs:import namespace="http://www.xbrl.org/dtr/type/non-numeric" schemaLocation="http://www.xbrl.org/dtr/type/nonNumeric-2009-12-16.xsd"/>
  <xs:import namespace="http://xbrl.org/2005/xbrldt" schemaLocation="http://www.xbrl.org/2005/xbrldt-2005.xsd"/>
  <xs:element name="ConsolidatedBalanceSheetsUnauditedAbstract" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="intt_ConsolidatedBalanceSheetsUnauditedAbstract"/>
  <xs:element name="CurrentAssetsAbstract" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="intt_CurrentAssetsAbstract"/>
  <xs:element name="PropertyAndEquipmentAbstract" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="intt_PropertyAndEquipmentAbstract"/>
  <xs:element name="CurrentLiabilitiesAbstract" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="intt_CurrentLiabilitiesAbstract"/>
  <xs:element name="ConsolidatedStatementsOfOperationsUnauditedAbstract" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="intt_ConsolidatedStatementsOfOperationsUnauditedAbstract"/>
  <xs:element name="OtherIncomeExpenseAbstract" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="intt_OtherIncomeExpenseAbstract"/>
  <xs:element name="Other" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" xbrli:balance="debit" nillable="true" substitutionGroup="xbrli:item" id="intt_Other"/>
  <xs:element name="ConsolidatedStatementsOfComprehensiveEarningsUnauditedAbstract" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="intt_ConsolidatedStatementsOfComprehensiveEarningsUnauditedAbstract"/>
  <xs:element name="ConsolidatedStatementOfStockholdersEquityUnauditedAbstract" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="intt_ConsolidatedStatementOfStockholdersEquityUnauditedAbstract"/>
  <xs:element name="ConsolidatedStatementsOfCashFlowsUnauditedAbstract" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="intt_ConsolidatedStatementsOfCashFlowsUnauditedAbstract"/>
  <xs:element name="CashFlowsFromOperatingActivitiesAbstract" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="intt_CashFlowsFromOperatingActivitiesAbstract"/>
  <xs:element name="AdjustmentsToReconcileNetEarningsToNetCashProvidedByOperatingActivitiesAbstract" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="intt_AdjustmentsToReconcileNetEarningsToNetCashProvidedByOperatingActivitiesAbstract"/>
  <xs:element name="StockIssuedDuringPeriodValueProfitSharingContribution" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" xbrli:balance="debit" nillable="true" substitutionGroup="xbrli:item" id="intt_StockIssuedDuringPeriodValueProfitSharingContribution"/>
  <xs:element name="ProceedsFromSaleOfMachineryAndEquipmentNetOfGain" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" xbrli:balance="debit" nillable="true" substitutionGroup="xbrli:item" id="intt_ProceedsFromSaleOfMachineryAndEquipmentNetOfGain"/>
  <xs:element name="ChangesInAssetsAndLiabilitiesAbstract" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="intt_ChangesInAssetsAndLiabilitiesAbstract"/>
  <xs:element name="CashFlowsFromInvestingActivitiesAbstract" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="intt_CashFlowsFromInvestingActivitiesAbstract"/>
  <xs:element name="CashFlowsFromFinancingActivitiesAbstract" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="intt_CashFlowsFromFinancingActivitiesAbstract"/>
  <xs:element name="CashPaymentsForAbstract" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="intt_CashPaymentsForAbstract"/>
  <xs:element name="DetailsOfAcquisitionAbstract" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="intt_DetailsOfAcquisitionAbstract"/>
  <xs:element name="SupplementalDisclosureOfNonCashInvestingAndFinancingActivitiesAbstract" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="intt_SupplementalDisclosureOfNonCashInvestingAndFinancingActivitiesAbstract"/>
  <xs:element name="NatureOfOperationsTextBlockAbstract" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="intt_NatureOfOperationsTextBlockAbstract"/>
  <xs:element name="SignificantAccountingPoliciesTextBlockAbstract" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="intt_SignificantAccountingPoliciesTextBlockAbstract"/>
  <xs:element name="MergersAcquisitionsAndDispositionsDisclosuresTextBlockAbstract" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="intt_MergersAcquisitionsAndDispositionsDisclosuresTextBlockAbstract"/>
  <xs:element name="GoodwillAndIntangibleAssetsDisclosureTextBlockAbstract" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="intt_GoodwillAndIntangibleAssetsDisclosureTextBlockAbstract"/>
  <xs:element name="RestructuringAndRelatedActivitiesDisclosureTextBlockAbstract" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="intt_RestructuringAndRelatedActivitiesDisclosureTextBlockAbstract"/>
  <xs:element name="ScheduleOfRevenueByMajorCustomersByReportingSegmentsTableTextBlockAbstract" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="intt_ScheduleOfRevenueByMajorCustomersByReportingSegmentsTableTextBlockAbstract"/>
  <xs:element name="InventoryDisclosureTextBlockAbstract" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="intt_InventoryDisclosureTextBlockAbstract"/>
  <xs:element name="DebtDisclosureTextBlockAbstract" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="intt_DebtDisclosureTextBlockAbstract"/>
  <xs:element name="LeasesOfLesseeDisclosureTextBlockAbstract" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="intt_LeasesOfLesseeDisclosureTextBlockAbstract"/>
  <xs:element name="GuaranteesTextBlockAbstract" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="intt_GuaranteesTextBlockAbstract"/>
  <xs:element name="DisclosureOfCompensationRelatedCostsShareBasedPaymentsTextBlockAbstract" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="intt_DisclosureOfCompensationRelatedCostsShareBasedPaymentsTextBlockAbstract"/>
  <xs:element name="PensionAndOtherPostretirementBenefitsDisclosureTextBlockAbstract" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="intt_PensionAndOtherPostretirementBenefitsDisclosureTextBlockAbstract"/>
  <xs:element name="SegmentReportingDisclosureTextBlockAbstract" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="intt_SegmentReportingDisclosureTextBlockAbstract"/>
  <xs:element name="SignificantAccountingPoliciesAbstract" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="intt_SignificantAccountingPoliciesAbstract"/>
  <xs:element name="BasisOfPresentationAndUseOfEstimatesPolicyTextBlock" type="nonnum:textBlockItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="intt_BasisOfPresentationAndUseOfEstimatesPolicyTextBlock"/>
  <xs:element name="GoodwillIntangibleAndLongLivedAssetsPolicyTextBlock" type="nonnum:textBlockItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="intt_GoodwillIntangibleAndLongLivedAssetsPolicyTextBlock"/>
  <xs:element name="RestructuringAndOtherChargesPolicyTextBlock" type="nonnum:textBlockItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="intt_RestructuringAndOtherChargesPolicyTextBlock"/>
  <xs:element name="ScheduleOfOutstandingLettersOfCreditTableTextBlock" type="nonnum:textBlockItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="intt_ScheduleOfOutstandingLettersOfCreditTableTextBlock"/>
  <xs:element name="WeightedAverageCommonSharesAbstract" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="intt_WeightedAverageCommonSharesAbstract"/>
  <xs:element name="PotentiallyDilutiveSecuritiesAbstract" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="intt_PotentiallyDilutiveSecuritiesAbstract"/>
  <xs:element name="AllocationOfThePurchasePriceAbstract" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="intt_AllocationOfThePurchasePriceAbstract"/>
  <xs:element name="FiniteLivedIntangibleAssetsAcquiredWithAcquisitionOfThermonicsAbstract" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="intt_FiniteLivedIntangibleAssetsAcquiredWithAcquisitionOfThermonicsAbstract"/>
  <xs:element name="FiniteLivedIntangibleAssetsAcquiredDomain" type="nonnum:domainItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="intt_FiniteLivedIntangibleAssetsAcquiredDomain"/>
  <xs:element name="ProformaAcquisitionAbstract" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="intt_ProformaAcquisitionAbstract"/>
  <xs:element name="ChangesInTheAmountOfTheCarryingValueOfGoodwillAbstract" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="intt_ChangesInTheAmountOfTheCarryingValueOfGoodwillAbstract"/>
  <xs:element name="GoodwillDomain" type="nonnum:domainItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="intt_GoodwillDomain"/>
  <xs:element name="FurtherDetailAboutIntangibleAssetsAbstract" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="intt_FurtherDetailAboutIntangibleAssetsAbstract"/>
  <xs:element name="IntangibleAssetsDomain" type="nonnum:domainItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="intt_IntangibleAssetsDomain"/>
  <xs:element name="IndefiniteLivedIntangibleAssetsAbstract" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="intt_IndefiniteLivedIntangibleAssetsAbstract"/>
  <xs:element name="IntangibleAssetsGrossExcludingGoodwill" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="instant" xbrli:balance="debit" nillable="true" substitutionGroup="xbrli:item" id="intt_IntangibleAssetsGrossExcludingGoodwill"/>
  <xs:element name="FiniteLivedIntangibleAssetsAbstract0" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="intt_FiniteLivedIntangibleAssetsAbstract0"/>
  <xs:element name="IndefiniteLivedIntangibleAssetsAbstract0" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="intt_IndefiniteLivedIntangibleAssetsAbstract0"/>
  <xs:element name="EstimatedUsefulLivesOfFiniteLivedIntangibleAssetsAbstract" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="intt_EstimatedUsefulLivesOfFiniteLivedIntangibleAssetsAbstract"/>
  <xs:element name="FiniteLivedIntangibleAssetsDomain" type="nonnum:domainItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="intt_FiniteLivedIntangibleAssetsDomain"/>
  <xs:element name="InMonthsAbstract" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="intt_InMonthsAbstract"/>
  <xs:element name="FiniteLivedIntangibleAssetRemainingUsefulLife" type="xbrli:durationItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="intt_FiniteLivedIntangibleAssetRemainingUsefulLife"/>
  <xs:element name="ChangesInTheAmountOfTheCarryingValueOfFiniteLivedIntangibleAssetsAbstract" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="intt_ChangesInTheAmountOfTheCarryingValueOfFiniteLivedIntangibleAssetsAbstract"/>
  <xs:element name="FutureAmortizationExpenseAbstract" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="intt_FutureAmortizationExpenseAbstract"/>
  <xs:element name="LiabilityForRestructuringAndOtherChargesAbstract" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="intt_LiabilityForRestructuringAndOtherChargesAbstract"/>
  <xs:element name="InventoriesAbstract" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="intt_InventoriesAbstract"/>
  <xs:element name="OutstandingLettersOfCreditAbstract" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="intt_OutstandingLettersOfCreditAbstract"/>
  <xs:element name="LettersOfCreditDomain" type="nonnum:domainItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="intt_LettersOfCreditDomain"/>
  <xs:element name="OriginalLCIssueDate" type="xbrli:dateItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="intt_OriginalLCIssueDate"/>
  <xs:element name="LCExpirationDate" type="xbrli:stringItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="intt_LCExpirationDate"/>
  <xs:element name="WarrantyLiabilityAbstract" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="intt_WarrantyLiabilityAbstract"/>
  <xs:element name="AllocationOfShareBasedCompensationExpenseAbstract" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="intt_AllocationOfShareBasedCompensationExpenseAbstract"/>
  <xs:element name="NonvestedSharesAbstract" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="intt_NonvestedSharesAbstract"/>
  <xs:element name="StockOptionActivityAbstract" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="intt_StockOptionActivityAbstract"/>
  <xs:element name="SegmentInformationAbstract" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="intt_SegmentInformationAbstract"/>
  <xs:element name="EarningsBeforeIncomeTaxDomain" type="nonnum:domainItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="intt_EarningsBeforeIncomeTaxDomain"/>
  <xs:element name="NetRevenuesUnaffiliatedCustomersDomain" type="nonnum:domainItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="intt_NetRevenuesUnaffiliatedCustomersDomain"/>
  <xs:element name="NetEarningsDomain" type="nonnum:domainItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="intt_NetEarningsDomain"/>
  <xs:element name="IntersegmentSalesDomain" type="nonnum:domainItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="intt_IntersegmentSalesDomain"/>
  <xs:element name="IntersegmentSalesAbstract" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="intt_IntersegmentSalesAbstract"/>
  <xs:element name="EarningsLossBeforeIncomeTaxExpenseBenefitAbstract" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="intt_EarningsLossBeforeIncomeTaxExpenseBenefitAbstract"/>
  <xs:element name="NetEarningsLossAbstract" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="intt_NetEarningsLossAbstract"/>
  <xs:element name="SegmentInformationIdentifiableAssetsLongLivedAssetsAbstract" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="intt_SegmentInformationIdentifiableAssetsLongLivedAssetsAbstract"/>
  <xs:element name="LongLivedAssetsDomain" type="nonnum:domainItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="intt_LongLivedAssetsDomain"/>
  <xs:element name="IdentifiableAssetsDomain" type="nonnum:domainItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="intt_IdentifiableAssetsDomain"/>
  <xs:element name="RangeDomain" type="nonnum:domainItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="intt_RangeDomain"/>
  <xs:element name="DefinedContributionPlanEmployerMatchingContributionVestingPeriod" type="xbrli:durationItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="intt_DefinedContributionPlanEmployerMatchingContributionVestingPeriod"/>
  <xs:element name="MaximumContributionPerDollar" type="xbrli:decimalItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="intt_MaximumContributionPerDollar"/>
  <xs:element name="ProfitSharingContributionTotalPlannedContribution" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" xbrli:balance="debit" nillable="true" substitutionGroup="xbrli:item" id="intt_ProfitSharingContributionTotalPlannedContribution"/>
  <xs:element name="ProfitSharingContributionAnnualPlannedContribution" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" xbrli:balance="debit" nillable="true" substitutionGroup="xbrli:item" id="intt_ProfitSharingContributionAnnualPlannedContribution"/>
  <xs:element name="ProfitSharingContributionCumulativeContributionToDate" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" xbrli:balance="credit" nillable="true" substitutionGroup="xbrli:item" id="intt_ProfitSharingContributionCumulativeContributionToDate"/>
  <xs:element name="ProfitSharingContributionMinimumPricePerShareForUseOfStock" type="num:perShareItemType" abstract="false" xbrli:periodType="instant" nillable="true" substitutionGroup="xbrli:item" id="intt_ProfitSharingContributionMinimumPricePerShareForUseOfStock"/>
  <xs:element name="NetRevenuesUnaffiliatedCustomersAxis" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrldt:dimensionItem" id="intt_NetRevenuesUnaffiliatedCustomersAxis"/>
  <xs:element name="NetEarningsAxis" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrldt:dimensionItem" id="intt_NetEarningsAxis"/>
  <xs:element name="FiniteLivedIntangibleAssetsAcquiredAxis" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrldt:dimensionItem" id="intt_FiniteLivedIntangibleAssetsAcquiredAxis"/>
  <xs:element name="IdentifiableAssetsAxis" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrldt:dimensionItem" id="intt_IdentifiableAssetsAxis"/>
  <xs:element name="EarningsBeforeIncomeTaxAxis" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrldt:dimensionItem" id="intt_EarningsBeforeIncomeTaxAxis"/>
  <xs:element name="IntersegmentSalesAxis" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrldt:dimensionItem" id="intt_IntersegmentSalesAxis"/>
  <xs:element name="IntangibleAssetsAxis" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrldt:dimensionItem" id="intt_IntangibleAssetsAxis"/>
  <xs:element name="LongLivedAssetsAxis" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrldt:dimensionItem" id="intt_LongLivedAssetsAxis"/>
  <xs:element name="FiniteLivedIntangibleAssetsAxis" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrldt:dimensionItem" id="intt_FiniteLivedIntangibleAssetsAxis"/>
  <xs:element name="LeasingAxis" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrldt:dimensionItem" id="intt_LeasingAxis"/>
  <xs:element name="GoodwillAxis" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrldt:dimensionItem" id="intt_GoodwillAxis"/>
  <xs:element name="LettersOfCreditAxis" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrldt:dimensionItem" id="intt_LettersOfCreditAxis"/>
  <xs:element name="EngineeringAndProductDevelopmentExpenseMember" type="nonnum:domainItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="intt_EngineeringAndProductDevelopmentExpenseMember"/>
  <xs:element name="TeradyneIncMember" type="nonnum:domainItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="intt_TeradyneIncMember"/>
  <xs:element name="ForeignMember" type="nonnum:domainItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="intt_ForeignMember"/>
  <xs:element name="ThermalProductsMember" type="nonnum:domainItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="intt_ThermalProductsMember"/>
  <xs:element name="MansfieldMember" type="nonnum:domainItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="intt_MansfieldMember"/>
  <xs:element name="IntersegmentSalesMember" type="nonnum:domainItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="intt_IntersegmentSalesMember"/>
  <xs:element name="UnitedStatesMember" type="nonnum:domainItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="intt_UnitedStatesMember"/>
  <xs:element name="MechanicalProductsMember" type="nonnum:domainItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="intt_MechanicalProductsMember"/>
  <xs:element name="TerminationFeesMember" type="nonnum:domainItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="intt_TerminationFeesMember"/>
  <xs:element name="TemptronicFacilityMember" type="nonnum:domainItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="intt_TemptronicFacilityMember"/>
  <xs:element name="ClosureCostsMember" type="nonnum:domainItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="intt_ClosureCostsMember"/>
  <xs:element name="SigmaMember" type="nonnum:domainItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="intt_SigmaMember"/>
  <xs:element name="FairValueMember" type="nonnum:domainItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="intt_FairValueMember"/>
  <xs:element name="TexasInstrumentsIncorporatedMember" type="nonnum:domainItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="intt_TexasInstrumentsIncorporatedMember"/>
  <xs:element name="TotalMember" type="nonnum:domainItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="intt_TotalMember"/>
  <xs:element name="MaximumAggregateMember" type="nonnum:domainItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="intt_MaximumAggregateMember"/>
  <xs:element name="ThermonicsMember" type="nonnum:domainItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="intt_ThermonicsMember"/>
  <xs:element name="EstimatedUsefulLifeMember" type="nonnum:domainItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="intt_EstimatedUsefulLifeMember"/>
  <xs:element name="AccumulatedAmortizationMember" type="nonnum:domainItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="intt_AccumulatedAmortizationMember"/>
  <xs:element name="AssetsAndLiabilitiesAssumedMember" type="nonnum:domainItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="intt_AssetsAndLiabilitiesAssumedMember"/>
  <xs:element name="RelocationMember" type="nonnum:domainItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="intt_RelocationMember"/>
  <xs:element name="UsefulLifeMember" type="nonnum:domainItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="intt_UsefulLifeMember"/>
  <xs:element name="NetCarryingAmountMember" type="nonnum:domainItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="intt_NetCarryingAmountMember"/>
  <xs:element name="CustomerBacklogMember" type="nonnum:domainItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="intt_CustomerBacklogMember"/>
  <xs:element name="RemainingEstimatedUsefulLifeMember" type="nonnum:domainItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="intt_RemainingEstimatedUsefulLifeMember"/>
  <xs:element name="SanJoseMember" type="nonnum:domainItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="intt_SanJoseMember"/>
  <xs:element name="ElectricalProductsMember" type="nonnum:domainItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="intt_ElectricalProductsMember"/>
  <xs:element name="GrossCarryingAmountsMember" type="nonnum:domainItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="intt_GrossCarryingAmountsMember"/>
  <xs:element name="MaximumAnnualMember" type="nonnum:domainItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="intt_MaximumAnnualMember"/>
  <xs:element name="CarryingValueChangesMember" type="nonnum:domainItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="intt_CarryingValueChangesMember"/>
  <xs:element name="MtLaurelMember" type="nonnum:domainItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="intt_MtLaurelMember"/>
  <xs:element name="RevenuesMember" type="nonnum:domainItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="intt_RevenuesMember"/>
  <xs:element name="FacilityClosureCostsMember" type="nonnum:domainItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="intt_FacilityClosureCostsMember"/>
  <xs:element name="DocumentAndEntityInformationAbstract" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="intt_DocumentAndEntityInformationAbstract"/>
</xs:schema>
</XBRL>
