天平调修工作中,对不等臂偏差一般使用卡板进行粗调。卡板只凭目测,分辨能力差。有的借助放大镜来提高分辨力,但也不够理想。我们制作了一个刀距卡,即在原卡板上加上一个杠杆放大指示器(如图),可使分辨力提高二十多倍,使用也很方便。这种工具还可以检查刀刃的不平行性。制作要求: 1.活动支点的轴孔为基轴制一级动配合; Balance adjustment work, the uneven arm deviation generally use card board for coarse adjustment. Pallets only visual, poor resolution. Some use the magnifying glass to improve the resolution, but not ideal enough. We made a knife card, that is, the original card board with a lever to enlarge the indicator (shown), can improve the resolution more than twenty times, easy to use. This tool can also check the blade’s non-parallelism. Production requirements: 1. Activity fulcrum shaft hole for the first base with a dynamic system;