在检定游标卡尺时,经常出现下述两种现象:1.检定游标卡尺内量爪尺寸(刀口),按规程要求用外量爪将10mm 量块夹住,可是一拧紧固紧螺钉,量块就掉下或与量爪的接触发生变化。2.检定示值误差中,往往是外量爪里端示值误差合格,而外端示值误差不合格。上述现象主要是因弹簧片弯曲形状不佳和 In the test Vernier caliper, often the following two phenomena: 1. Vernier caliper test within the size of the claw (knife edge), according to the rules require the amount of external claws clamp 10mm, but a tighten the screws, the amount of the block on the Under or with contact with the amount of claw changes. 2. Check the indication error, often outside the amount of error in the end of the indication error, while the outer end of the indication error unqualified. The above phenomenon is mainly due to poor shape and bending of spring leaf