<?xml version="1.0" encoding="UTF-8"?>

<!--XBRL Document Created with the Workiva Platform-->
<!--Copyright 2026 Workiva-->
<!--r:019ff7d1-0fa7-7de4-b530-45d7a256fd6d,g:e5394735-c896-45bc-96b9-5b6e42a1bf7e-->
<link:linkbase xmlns:link="http://www.xbrl.org/2003/linkbase" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://www.xbrl.org/2003/linkbase http://www.xbrl.org/2003/xbrl-linkbase-2003-12-31.xsd">
  <link:roleRef roleURI="http://www.intt.com/role/DocumentAndEntityInformation" xlink:type="simple" xlink:href="intt-20260814.xsd#DocumentAndEntityInformation"/>
  <link:presentationLink xlink:role="http://www.intt.com/role/DocumentAndEntityInformation" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_dei_DocumentInformationTable_019ff7d1-0fa7-7a57-b156-08f88f26f0eb" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_DocumentInformationTable"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_LegalEntityAxis_019ff7d1-0fa7-7050-9bac-a8454b1604b5" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_LegalEntityAxis"/>
    <link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_DocumentInformationTable_019ff7d1-0fa7-7a57-b156-08f88f26f0eb" xlink:to="loc_dei_LegalEntityAxis_019ff7d1-0fa7-7050-9bac-a8454b1604b5" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_019ff7d1-0fa7-75e8-b31e-47e11d145160" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_EntityDomain"/>
    <link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_LegalEntityAxis_019ff7d1-0fa7-7050-9bac-a8454b1604b5" xlink:to="loc_dei_EntityDomain_019ff7d1-0fa7-75e8-b31e-47e11d145160" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_DocumentInformationLineItems_019ff7d1-0fa7-79a3-be1b-5b8adb33a756" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_DocumentInformationLineItems"/>
    <link:presentationArc order="2" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_DocumentInformationTable_019ff7d1-0fa7-7a57-b156-08f88f26f0eb" xlink:to="loc_dei_DocumentInformationLineItems_019ff7d1-0fa7-79a3-be1b-5b8adb33a756" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityRegistrantName_019ff7d1-0fa7-7e82-9b1c-b571f0b0d937" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_EntityRegistrantName"/>
    <link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_DocumentInformationLineItems_019ff7d1-0fa7-79a3-be1b-5b8adb33a756" xlink:to="loc_dei_EntityRegistrantName_019ff7d1-0fa7-7e82-9b1c-b571f0b0d937" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_DocumentType_019ff7d1-0fa7-7c8f-96fa-94a7cec4c8fa" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_DocumentType"/>
    <link:presentationArc order="2" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_DocumentInformationLineItems_019ff7d1-0fa7-79a3-be1b-5b8adb33a756" xlink:to="loc_dei_DocumentType_019ff7d1-0fa7-7c8f-96fa-94a7cec4c8fa" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_DocumentPeriodEndDate_019ff7d1-0fa7-72d4-ac60-c15b6df0fe90" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_DocumentPeriodEndDate"/>
    <link:presentationArc order="3" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_DocumentInformationLineItems_019ff7d1-0fa7-79a3-be1b-5b8adb33a756" xlink:to="loc_dei_DocumentPeriodEndDate_019ff7d1-0fa7-72d4-ac60-c15b6df0fe90" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityIncorporationStateCountryCode_019ff7d1-0fa7-718e-a6ce-b331fd1816c9" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_EntityIncorporationStateCountryCode"/>
    <link:presentationArc order="4" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_DocumentInformationLineItems_019ff7d1-0fa7-79a3-be1b-5b8adb33a756" xlink:to="loc_dei_EntityIncorporationStateCountryCode_019ff7d1-0fa7-718e-a6ce-b331fd1816c9" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityFileNumber_019ff7d1-0fa7-7024-bf67-28771904c521" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_EntityFileNumber"/>
    <link:presentationArc order="5" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_DocumentInformationLineItems_019ff7d1-0fa7-79a3-be1b-5b8adb33a756" xlink:to="loc_dei_EntityFileNumber_019ff7d1-0fa7-7024-bf67-28771904c521" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityTaxIdentificationNumber_019ff7d1-0fa7-750b-b235-f2282fdc3e81" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_EntityTaxIdentificationNumber"/>
    <link:presentationArc order="6" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_DocumentInformationLineItems_019ff7d1-0fa7-79a3-be1b-5b8adb33a756" xlink:to="loc_dei_EntityTaxIdentificationNumber_019ff7d1-0fa7-750b-b235-f2282fdc3e81" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityAddressAddressLine1_019ff7d1-0fa7-7445-8d16-69dc01d4472f" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_EntityAddressAddressLine1"/>
    <link:presentationArc order="7" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_DocumentInformationLineItems_019ff7d1-0fa7-79a3-be1b-5b8adb33a756" xlink:to="loc_dei_EntityAddressAddressLine1_019ff7d1-0fa7-7445-8d16-69dc01d4472f" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityAddressAddressLine2_019ff7d1-0fa7-7f52-ac54-9a6665fb16d2" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_EntityAddressAddressLine2"/>
    <link:presentationArc order="8" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_DocumentInformationLineItems_019ff7d1-0fa7-79a3-be1b-5b8adb33a756" xlink:to="loc_dei_EntityAddressAddressLine2_019ff7d1-0fa7-7f52-ac54-9a6665fb16d2" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityAddressCityOrTown_019ff7d1-0fa7-7a48-86d0-50ca3467a8cc" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_EntityAddressCityOrTown"/>
    <link:presentationArc order="9" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_DocumentInformationLineItems_019ff7d1-0fa7-79a3-be1b-5b8adb33a756" xlink:to="loc_dei_EntityAddressCityOrTown_019ff7d1-0fa7-7a48-86d0-50ca3467a8cc" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityAddressStateOrProvince_019ff7d1-0fa7-790f-95fc-0778ed98f066" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_EntityAddressStateOrProvince"/>
    <link:presentationArc order="10" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_DocumentInformationLineItems_019ff7d1-0fa7-79a3-be1b-5b8adb33a756" xlink:to="loc_dei_EntityAddressStateOrProvince_019ff7d1-0fa7-790f-95fc-0778ed98f066" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityAddressPostalZipCode_019ff7d1-0fa7-7d1d-be71-08a0337a922b" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_EntityAddressPostalZipCode"/>
    <link:presentationArc order="11" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_DocumentInformationLineItems_019ff7d1-0fa7-79a3-be1b-5b8adb33a756" xlink:to="loc_dei_EntityAddressPostalZipCode_019ff7d1-0fa7-7d1d-be71-08a0337a922b" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_CityAreaCode_019ff7d1-0fa7-78d9-aece-8da07e1232a4" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_CityAreaCode"/>
    <link:presentationArc order="12" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_DocumentInformationLineItems_019ff7d1-0fa7-79a3-be1b-5b8adb33a756" xlink:to="loc_dei_CityAreaCode_019ff7d1-0fa7-78d9-aece-8da07e1232a4" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_LocalPhoneNumber_019ff7d1-0fa7-7ef6-8b9a-7963e894af3a" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_LocalPhoneNumber"/>
    <link:presentationArc order="13" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_DocumentInformationLineItems_019ff7d1-0fa7-79a3-be1b-5b8adb33a756" xlink:to="loc_dei_LocalPhoneNumber_019ff7d1-0fa7-7ef6-8b9a-7963e894af3a" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_WrittenCommunications_019ff7d1-0fa7-7f1b-8dea-d46b7a28607f" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_WrittenCommunications"/>
    <link:presentationArc order="14" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_DocumentInformationLineItems_019ff7d1-0fa7-79a3-be1b-5b8adb33a756" xlink:to="loc_dei_WrittenCommunications_019ff7d1-0fa7-7f1b-8dea-d46b7a28607f" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_SolicitingMaterial_019ff7d1-0fa7-78bf-bc48-1e36e222bb72" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_SolicitingMaterial"/>
    <link:presentationArc order="15" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_DocumentInformationLineItems_019ff7d1-0fa7-79a3-be1b-5b8adb33a756" xlink:to="loc_dei_SolicitingMaterial_019ff7d1-0fa7-78bf-bc48-1e36e222bb72" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_PreCommencementTenderOffer_019ff7d1-0fa7-7d13-a3f1-f281e609b929" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_PreCommencementTenderOffer"/>
    <link:presentationArc order="16" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_DocumentInformationLineItems_019ff7d1-0fa7-79a3-be1b-5b8adb33a756" xlink:to="loc_dei_PreCommencementTenderOffer_019ff7d1-0fa7-7d13-a3f1-f281e609b929" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_PreCommencementIssuerTenderOffer_019ff7d1-0fa7-76ee-a776-7dd32e3a2d75" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_PreCommencementIssuerTenderOffer"/>
    <link:presentationArc order="17" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_DocumentInformationLineItems_019ff7d1-0fa7-79a3-be1b-5b8adb33a756" xlink:to="loc_dei_PreCommencementIssuerTenderOffer_019ff7d1-0fa7-76ee-a776-7dd32e3a2d75" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_Security12bTitle_019ff7d1-0fa7-741d-b142-245dc5bd34a1" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_Security12bTitle"/>
    <link:presentationArc order="18" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_DocumentInformationLineItems_019ff7d1-0fa7-79a3-be1b-5b8adb33a756" xlink:to="loc_dei_Security12bTitle_019ff7d1-0fa7-741d-b142-245dc5bd34a1" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_TradingSymbol_019ff7d1-0fa7-7e78-a7e2-dbfe17fcf1b1" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_TradingSymbol"/>
    <link:presentationArc order="19" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_DocumentInformationLineItems_019ff7d1-0fa7-79a3-be1b-5b8adb33a756" xlink:to="loc_dei_TradingSymbol_019ff7d1-0fa7-7e78-a7e2-dbfe17fcf1b1" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_SecurityExchangeName_019ff7d1-0fa7-7143-bb7c-3aba0a5080cc" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_SecurityExchangeName"/>
    <link:presentationArc order="20" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_DocumentInformationLineItems_019ff7d1-0fa7-79a3-be1b-5b8adb33a756" xlink:to="loc_dei_SecurityExchangeName_019ff7d1-0fa7-7143-bb7c-3aba0a5080cc" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityEmergingGrowthCompany_019ff7d1-0fa7-72d0-88e9-ff2b4cd6fbf1" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_EntityEmergingGrowthCompany"/>
    <link:presentationArc order="21" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_DocumentInformationLineItems_019ff7d1-0fa7-79a3-be1b-5b8adb33a756" xlink:to="loc_dei_EntityEmergingGrowthCompany_019ff7d1-0fa7-72d0-88e9-ff2b4cd6fbf1" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_AmendmentFlag_019ff7d1-0fa7-73b5-b16f-7c6e4a2c3257" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_AmendmentFlag"/>
    <link:presentationArc order="22" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_DocumentInformationLineItems_019ff7d1-0fa7-79a3-be1b-5b8adb33a756" xlink:to="loc_dei_AmendmentFlag_019ff7d1-0fa7-73b5-b16f-7c6e4a2c3257" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityCentralIndexKey_019ff7d1-0fa7-73bc-b0c0-fc79fedcf382" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_EntityCentralIndexKey"/>
    <link:presentationArc order="23" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_DocumentInformationLineItems_019ff7d1-0fa7-79a3-be1b-5b8adb33a756" xlink:to="loc_dei_EntityCentralIndexKey_019ff7d1-0fa7-73bc-b0c0-fc79fedcf382" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_AmendmentFlag_019ff7d1-0fa7-70c7-806e-fdbe84f9d5e7" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_AmendmentFlag"/>
  </link:presentationLink>
</link:linkbase>
