方形角尺Granitesquaresrulers規(guī)格Type(mm)相鄰兩測(cè)量面垂直度Squarenessbetweenadjacentmeasuringsurfaces測(cè)量面直線(xiàn)度Straightnessofmeasuringsurface相對(duì)測(cè)量面平行度Parallelismbotweenopplsitemeasuringsurface精密等級(jí)Precisiongrade( m)OO級(jí)O級(jí)OO級(jí)O級(jí)OO級(jí)O級(jí)160*160240.81.724200*200240.91.824250*2502.24.5122.24.5300*3002.65.21.12.32.65.5用于垂直、平等度檢測(cè)，并可作為900絕對(duì)測(cè)量基準(zhǔn)。Oninspectionlfverticalityandparallelismaswellasabsolure90 measuring.