Designation:D1813−13StandardTestMethodforMeasuringThicknessofLeatherTestSpecimens1ThisstandardisissuedunderthefixeddesignationD1813;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.ThisstandardhasbeenapprovedforusebyagenciesoftheDepartmentofDefense.1.Scope1.1Thistestmethodcoversthemeasurementofthethick-nessofleathertestspecimensinwhichthedimensionsofthespecimensareuseddirectlyindeterminingtheresultsoftestsforphysicalproperties.Thistestmethoddoesnotapplytowetblue.1.2Thevaluesstatedininch-poundunitsaretoberegardedasstandard.ThevaluesgiveninparenthesesaremathematicalconversionstoSIunitsthatareprovidedforinformationonlyandarenotconsideredstandard.1.3Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappro-priatesafetyandhealthpracticesanddeterminetheapplica-bilityofregulatorylimitationspriortouse.2.ReferencedDocuments2.1ASTMStandards:2D1610PracticeforConditioningLeatherandLeatherProd-uctsforTesting3.SignificanceandUse3.1Thistestmethodshallbeusedwhereprecisedimensionsarenecessaryforcalculationofpropertiesexpressedinphysi-calunits.Itisnotintendedtoreplacepracticalthicknessmeasurementsbasedoncommercialportabletools,norisitimpliedthatthicknessmeasurementsmadebythetwoproce-dureswillagreeexactly.4.Apparatus4.1Gage,equippedwithadialmicrometer,aflatanvil,andapresserfootloadedbyadeadmass.34.2Dial,graduatedtoreadtothenearest0.01mm,withsmallseconddialgraduatedtoreadtothenearest1mmortothenearest0.001in.and0.1in.respectively.4.3Anvil,flat,withadiameterof0.39560.02in.(1060.5mm)andprojecting0.1in.(2.5mm)fromthesurfaceofaflatcircularplatformabout2in.(50mm)indiameter.4.4PresserFoot,havingaflatsurface0.39560.02in.(1060.5mm)indiameter,andcanbeliftedbyaleveratleast13mmor0.5in.Itshallbedead-mass...
