在调整和检验气动测长仪、指示式内径规、测量孔径的检验自动机和其它测量器具时,一般是用检定误差小于0.2～1微米的调整环规和标准环规。对于这样高的准确度,不允许用那些测量内尺寸误差大于1微米的和具有较大测力(达400斯坦)的成批生产的仪器(卧式光学计、卧式测长仪等)来检验它们。减小测力是不可能的,因为移动被测零件 In the adjustment and inspection of pneumatic length measuring instrument, indicating diameter gauge, measuring aperture of the test machine and other measuring instruments, the general is to use the calibration error of less than 0.2 to 1 micron regulatory ring and standard ring gauge. For such a high degree of accuracy it is not permitted to use batch production instruments (horizontal optics, horizontal length gauges, etc.) with an internal dimension error of more than 1 μm and large force (up to 400 stan) Test them. It is impossible to reduce the force measurement because the part under test is moving