>> P.418
HoltestHoltest(TypeII)SERIES368—Three-pointBoreMicrometers•TheHoltests(typeII)havethreecontactpointsmadeofalloysteelandallowamoreeconomicallypricedtool.•Sameaccuracyasthetitanium-coatedHoltestmodels.measurement.rod(optional).•CanmeasuredeepholesusinganExtension•Constant-forcedeviceallowsstableMeasurementexample368-769368-770368-774ReferencedimensionswhenmeasuringablindholeRange(mm)12-2020-3030-5050-100100-300L3(mm)2.6orbelow3.4orbelow19.6orbelowL5(mm)3.55.210.014.013.8FordetailsofSpecial-orderProducts,refertopage08-57.L5L3MaximumpermissibleerrorJMPE(in)*1±0.00015(maximumdifference0.00015)ExtensionRod(optional)952621(150mm)952622(150mm)InchIndividualExtensionRod(optional)CodeNo.Range*2(in)Graduation(in)MaximumpermissibleerrorJMPE(µm)*1952621(150mm)952622(150mm)952623(150mm)±3(maximumdifference3)±4(maximumdifference4)±5(maximumdifference5)±6(maximumdifference6)368-864368-865368-866368-867368-868368-869368-870368-871368-872368-873368-874368-875368-876368-877368-878368-879368-880368-8810.5-0.650.65-0.80.8-11-1.21.2-1.61.6-22-2.52.5-33-3.53.5-44-55-66-77-88-99-1010-1111-12±0.0002(maximumdifference0.0002)0.0002±0.00025(maximumdifference0.00025)952623(150mm)±0.0003(maximumdifference0.0003)Additionally,thedifferenceinpermissibleerrorallowableislimitedtoavaluewithinthisrange,asgiveninparentheses,andismeasuredwiththeentiremeasuringsurfaceincontactwiththeobjectmeasured.*2Themeasurementrangecannotbeenlargedbymeasuringheadsthatarenotstandard-supplied(theaccuracyisnotDIMENSIONSL1L2L1Unit:mmRange12-16,16-2020-25,25-3030-40,40-5050-63,62-75,75-88,87-100L28294102105L1126-130137-142145-155150-163100-125,125-150,150-175,175-200200-225,225-250,250-275,275-300Note:Externalappearancediffersdependingonthe161227-252measuringrange.08-11SPECIFICATIONSMetricIndividualCodeNo.Range*2(mm)Graduation(mm)12-1616-2020-2525-3030-4040-5050-6362-7575-8887-100100-125125-150150-175175-200200-225225-250250-275275-3000.005368-764368-765368-766368-767368-768368-769368-770368-771368-772368-773368-774368-775368-776368-777368-778368-779368-780368-781*1guaranteed).Note:Settingringsareoptional.Holtest
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