Designation:F1889−05(Reapproved2014)AnAmericanNationalStandardStandardGuideforStraightnessMeasurementofArrowShafts1ThisstandardisissuedunderthefixeddesignationF1889;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.INTRODUCTIONArrowshaftstraightnessisadesiredcharacteristic.Unfortunately,straightnessiscurrentlymeasuredusingvaryingmethodsatvaryingspanlengths.Thearcheryindustry,aswellasconsumers,haverecognizedthatitisdifficulttocomparemeasurementsatthesevariousspansusingdifferentmeasurementmethods.Thisguideproposestheuseofafixedspandistance,forallbutafewveryshortshafts,insteadofusingvariousspansbasedonvariousmanufacturedshaftlengths.Thespanlengthof28in.wasselectedbasedontypicalmanufacturedshaftlengths,aswellasotherATA/ASTMindustrystandards.Usingthisarrowshaftstraightnessguidewillbenefitconsumersaswellasthearcheryindustry.1.Scope1.1Thisguidecoverstheformulationanddesignationofstraightnessmeasurementstandardsandnomenclatureforarrowshafts.1.2Thisguideisdesignedtoprovidemanufacturersandconsumersameansformeasuringthestraightnessofarrowshaftswithtoolsanddevicesavailableinthearcheryindustryandsport.1.3Thevaluesstatedininch-poundunitsaretoberegardedasthestandard.TheSIunitsgiveninparenthesesareforinformationonly.2.Terminology2.1DefinitionsofTermsSpecifictoThisStandard:2.1.1arrowstraightness,n—theconformanceofthemate-rialorloadaxisofanarrowshafttothetruelinear,longitudinalaxisoftheshaft.2.1.2standardtotalindicatorreading(TIR),n—totalindi-catorreadingofarrowshaftstraightnessobtainedthroughmethodsoutlinedinthisguide.3.SignificanceandUse3.1Themeasurementsystempresentedinthisguideisintendedtoensureuniformarrowshaftstraightnessmeasure-mentstandardstoavoidconfusionoftheconsumer,whichresultsfromtheuseofdifferentstraightnessmeasurementsystems.4.MeasurementGuidelinesforArrowShaf...
