1957年第5期“机械工人”(热加工)月刊上介绍了蔡耕同志写的“电焊工用的三用检查卡尺”解决了电焊工在检查焊缝质量时缺少工具的困难,现在我们再绍介一种检查焊缝用的游标卡尺,供同志们参考。这个工具构造如图1。(详细形状见主要零件图)。1是卡尺体,是用1.5公厘厚的钢板制成,它的左右两端是两个角度板,一端是90°,一端是60°,为了减轻 In the monthly issue of Mechanic Workers (Hot Working) No. 5 of 1957, Comrade Cai Geng introduced the “three-purpose inspection calipers for welders” to solve the difficulty of welders in missing tools when inspecting the quality of welds. Now we again Introduce a check caliper vernier caliper, for gay people for reference. The tool structure shown in Figure 1. (See the main parts for details of shape). 1 is a caliper body is made of 1.5 mm thick steel plate, it is the two ends of the left and right angle plate, one end is 90 °, one end is 60 °, in order to reduce