使用中的外径千分尺,常由于微分丝杆的不均匀磨损而产生示值误差:在螺纹磨损严重的位置,螺距增大,反映示值误差为负;在螺纹磨损轻微的位置,螺距变化不大,反映示值误差为零或为正。在修理示值误差时,常采用研磨的方法消除或减小示值误差。一、修理的顺序1.根据检定规程检定并记录各点示值误差。2.根据示值误差的大小和分布情况,确定微分丝 Diameter micrometer used in the outside, often due to uneven wear of differential lead indication error: In the serious thread wear position, the pitch increases, reflecting the indication error is negative; minor thread wear position, the pitch change is not Large, reflecting the indication error is zero or positive. In the repair indication error, often using grinding method to eliminate or reduce the indication error. First, the order of repair 1. Accreditation procedures and verification of each point indication error. 2. According to the magnitude of the error indication and distribution, to determine the differential wire