我们将深浅卡尺的两卡脚各装上一个自制的支承装置,尺杆安上划针装置,即可作为圆规使用,如图所示。使用时,将支承装置上的轴承外环与工件的内圆或外圆接触,然后使边规随圆周转动,可划出所需要的分度圆线。安装这些自制附件,即不损伤卡尺,又能在各种环形零件上划线,不用找圆心,可提高划线的工 We will be the depth of the caliper caliper feet fitted with a self-supporting device, rod mounted needle device, you can use as a compass, as shown. When in use, the bearing outer ring on the supporting device is contacted with the inner circle or the outer circle of the workpiece, and then the side gauge is rotated with the circle to draw out the desired index line. Install these self-made accessories, that is, without damaging the calipers, but also in a variety of ring parts crossed, do not find the center of the circle, can improve marking workers