>> P.553
HeightGagesDepthGaugeblockHeightgagePrecisionsurfaceplateFig.1:DeterminationofheightmeasurementerrorHeightGages13-26istheinaheightgageMaximumPermissibleErrorofHeightMeasurementEMPE[JISB7517:2018]Theheightmeasurementerrorindicationerrorwhenthereferenceedge(column)isperpendiculartothebasereferencesurfaceandthedirectionofcontactisdownward.Table1showsthemaximumpermissibleheightmeasurementerrorEMPE.ThemaximumpermissibleerrorEMPEcanbeobtainedbymeasuringagaugeblock,orequivalent,withaheightgageonaprecisionsurfaceplate(Fig.1)andthensubtractingthegaugeblocksizefromthemeasuredsize.foraheightmeasurementTable1:MaximumpermissibleheightmeasurementerrorEMPEofaconventionalheightgageMeasurementlength50orlessOver50,100orlessOver100,200orlessOver200,300orlessOver300,400orlessOver400,500orlessOver500,600orlessOver600,700orlessOver700,800orlessOver800,900orlessOver900,1000orlessScaleinterval,graduationorresolution(Unit:mm)0.05±0.05±0.06±0.07±0.08±0.09±0.10±0.11±0.12±0.13±0.14±0.150.02or0.01±0.02±0.03±0.04±0.05±0.06±0.07Note:EMPEincludesthemeasurementerrorarisingfromstraightness,flatnessofthemeasuringsurfaceandparallelismwiththereferencesurface.
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