Designation:F16−12StandardTestMethodsforMeasuringDiameterorThicknessofWireandRibbonforElectronicDevicesandLamps1ThisstandardisissuedunderthefixeddesignationF16;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.1.Scope1.1Thesetestmethodscoverproceduresformeasuringthediameterorthicknessofroundandflatwire(ribbon)0.060in.(1.52mm)maximumusedinelectronicdevicesandlamps.1.2Thevaluesstatedininch-poundunitsaretoberegardedasstandard.ThevaluesgiveninparenthesesaremathematicalconversionstoSIunitsthatareprovidedforinformationonlyandarenotconsideredstandard.1.3Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappro-priatesafetyandhealthpracticesanddeterminetheapplica-bilityofregulatorylimitationspriortouse.2.SummaryofTestMethod2.1Inordertoprovidereliabledeterminationsofphysicaldimensionsofwireandribbonproducts,thesetestmethodsaredesignedtomechanicallymeasurethediameterorthicknesswithahighdegreeofprecision.Thesetestmethodsarebasedontheuseofasensitivemeasuringheadwithcalibratedpressuresettings,shapedmeasuringanvilstoreduceerrorscausedbymaterialcurvatureorwaviness,andamethodforpresettingtheanvilspacingbymeansofgageblocksorcylindricalmasterstandards.3.SignificanceandUse3.1Themethodscontainedinthisstandardareintendedprimarilyforrefereeuse,forlaboratorymeasuring,andforcertifyingsizeofstandardsamplesusedforcheckingothermeasuringequipmentthatmaybeagreeduponbetweenthesupplierandthepurchaser.4.Apparatus4.1Eitheroftwogeneraltypesofapparatusmaybeusedformeasuring,dependingontheaccuracydesiredandontheavailabilityofcertifiedcylindricalmasterstandardsforgagesetting,asfollows:4.1.1ApparatusA—Forusewithcylindricalmasterstan-dardsforgagesetting.4.1.2ApparatusB—Forusewithgageblockstandardsforgagesettin...
