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尺寸大于500毫米的工件,多半是用带有指示表的量规来检查。这种带指示表的量规能保证测量力不变。用一般结构的量规检查工件时,除了有温度的影响外,还有由于卡规和内径规的弹性变形而产生相当大的测量误差。在大量生产中一般采用无读数装置的刚性极限量规,而在小量及单件生产中,则采用带有读数装置的可调整的量规。如果在规定的检查制度里,尺寸大于500到5000毫米的工件必须用量规来检查时,对于5级精度以下的外尺寸,推荐采用刚性卡规和可调整卡规,而4级以下的内尺寸,则采用内径量
Workpieces larger than 500 mm are mostly checked with gauges with indicator gauges. This gauge with gauges ensures constant measuring force. With the general structure of the gauge inspection of the workpiece, in addition to the temperature of the impact, but also due to the caliper and the diameter gauge of the elastic deformation and considerable measurement error. Rigidity limit gauges for non-reading devices are generally used in mass production, and adjustable gauges with reading devices are used for small and single-piece production. If workpieces larger than 500 to 5000 mm in size are to be checked with gauges under the specified inspection system, a rigid caliper and an adjustable caliper are recommended for outer dimensions below the 5-level accuracy and internal dimensions below 4 , Then the amount of internal diameter