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一、现有规程检定光栅式指示表检定仪示值误差所使用的标准器JJG201-2008《指示类量具检定仪检定规程》规定:检定光栅式指示表检定仪示值误差要用3等量块和不超过±0.1μm(如分辨力为0.01μm的电感测微仪)检定。所以我们在检定光栅式指示表检定仪时选用3等量块和电感测微仪中分度值为0.1μm,测量范围为±3μm这一挡去检定光删式指示表检定仪示值误差。二、用高精度长度计和专用的数显仪表作为标准
First, the existing procedures for the determination of grating indicator meter indication error using the standard instrument JJG201-2008 “instructions measuring instrument verification procedures” provides: test grating indication meter indication error to use 3 equal block And no more than ± 0.1μm (such as the resolution of 0.01μm inductance micrometer) test. Therefore, when we test the grating indicator calibrator use 3 equal block and inductance micrometer in the graduation value of 0.1μm, the measurement range of ± 3μm block to detect the light-proof indicator instrument error indication. Second, with high-precision length meter and a dedicated digital display as a standard