深度尺寸精度要求较高,而手头又没有测深千分尺时,可自制带表深度游标卡尺进行测量。带表深度游标卡尺结构如图。主要由深度游标卡尺、表座及测块组成。测块工作面表面粗糙度为Ra0.2。使用时,将表座固定在尺座上,测块可沿着滑尺上下移动,根据测量深度将测块固定在滑尺的适当位置上。 Depth dimension accuracy requirements are high, and hand without depth measurement micrometer, can be made with the depth of the table vernier caliper measurements. Table with a deep vernier caliper structure shown in Figure. Mainly by the depth vernier caliper, table seat and measuring block. Measuring block surface roughness Ra0.2. When in use, the watch base is fixed on the pedestal, the measuring block can move up and down along the sliding ruler, and the measuring block is fixed on the proper position of the sliding ruler according to the measuring depth.