ISO10360-4isaninternationalstandardthatspecifiesacceptanceandreverificationtestsforcoordinatemeasuringmachines(CMMs)usedingeometricalproductspecifications(GPS).ThisstandardfocusesonevaluatingtheperformanceofCMMswhenmeasuringsize-relatedfeatures,suchasdiametersanddistances,underspecificconditions.Itprovidestestprocedures,permissibleerrors,andguidelinestoensuretheaccuracyandreliabilityofCMMmeasurements.Thestandardisessentialformanufacturers,users,andcalibrationlaboratoriestoverifythatCMMsmeetrequiredperformancecriteriaforindustrialapplications.CompliancewithISO10360-4helpsmaintainmeasurementconsistencyandqualitycontrolinmanufacturingprocesses.