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用C2型小角度检定仪检定自准直仪的示值误差时,可用一台中原量仪厂生产的GDB-5型指针式电感测微仪作为定位指零。该方法简便可行。利用电感测微仪(最小分度值为0.1μm)的“A-B”功能,同时接A、B两个轴向测头进行“差”计算。这样在测量时只需观察一台电感仪的指示表读数,给操作者带来很大方便。C2型小角度检定仪上的两个指示计装夹孔尺寸为φ28H7,因此需加工两个如图所示的
C2-type small angle calibrator self-collimator indication error when available from a Zhongyuan instrument factory production GDB-5-type pointer micrometer as a reference point. This method is simple and feasible. Using the “A-B” function of the inductance micrometer (the smallest graduation value is 0.1μm), the two axial probes A and B are simultaneously subjected to the “difference” calculation. This measurement only need to observe the readings of an indicator meter, bringing great convenience to the operator. The two indicator gauges on the C2 Small Angle Tester have a hole size of φ28H7, so two