一、游标卡尺内量爪示值超差的原因1.使用不当、机械损伤及跌落等多种因素的影响,常造成游标卡尺内量爪测量误差超差。2.在游标卡尺的使用中因材质欠佳、制造缺陷、正常磨损及变形出现的误差。以三用游标卡尺为例,以下两种量爪测量面缺陷均可引起测量误差超差:(1)刀口内量爪测量面尖头凸起,测量面不能合拢出现间隙,使测量尺寸小于实际尺寸。 First, the caliper caliper indication ultra-poor reason 1. improper use, mechanical damage and drop and other factors, often resulting in the amount of error within the caliper caliper measurement error. 2. The use of vernier caliper due to poor material, manufacturing defects, normal wear and tear and deformation of the error. Take the three-purpose vernier caliper as an example, the following two kinds of measuring surface defects can lead to measurement error: (1) The inner surface of the measuring surface of the measuring jaw is raised, the measurement surface can not be closed and the gap is smaller than the actual size .