一、跳针跳针是指天平启动时，指针尖端向前或向后跳动，原因是由于中刀缝前后不等，中刀缝前小指针向前跳，后小指针向后跳。一般的维修方法是：若指针往前跳，则升横梁水平板下的前支撑螺钉，或降后支撑螺钉，经过几次调整才能调好，此法费时费事，极为不便。因此，本人根据? First, skipping stitch Skipping refers to the start of the balance, the pointer tip forward or backward beating, because the knife before and after the stitch seam, small knife in the knife before the jump, after a small pointer jump backwards. The general method of maintenance is: If the pointer jump forward, then the horizontal beam under the crossbeam front support screws, or lower support screws, after several adjustments can be adjusted, this method is time-consuming and laborious, extremely inconvenient. Therefore, I based?