VDI/VDE/DGQ 2618 Sheet 4.4
Inspection of measuring and test equipment - Test instruction for reference gauges with plane-parallel or spherical measuring faces and for spherical-end gauges and internal callipers
测量和试验设备的检验.平面平行或球面测量面的基准量规和球面端规及内卡钳的试验说明
2009-09-01