在卡规磨削及研磨两测量面的工序中,常用游标卡尺或内径千分尺测量,以保证加工留量。但由于前者精度低,后者没有测力装置,靠操作者掌握测力的大小,因而加工留量不一,致使检定者与制造者常常发生矛盾。为了解决卡规制造中的测量问题,我们研制成功了内测量仪。内测量仪是用废游标卡尺改制的。如图所示: In the regulation of grinding and grinding two measuring surface of the process, the commonly used vernier caliper or diameter micrometer measurements to ensure that processing reserves. However, due to the low accuracy of the former, the latter does not have a force-measuring device and the operator can grasp the magnitude of the force-measuring force. Therefore, the processing reserves are different, resulting in the contradiction between the examiner and the manufacturer. In order to solve the measurement problem in the manufacture of the gauge, we have successfully developed the inner gauge. The gauge is made of waste vernier calipers. as the picture shows: