由於表面清理和刻线印刷得不好,以致测尺上的部分标尺形成了断线。为了使卡尺不因测尺上的断线而报废,所以必须把断线处加以修理。原为修理断线是由工人用修线刀进行手工修理的,由於它有下述很多缺点:1.技水水平要求较高;2.由於手工操作,修出的线不很直;3.修理后的线条宽、深不 Due to poor surface cleaning and stencil printing, part of the scale on the ruler formed a break. In order for the caliper not to be scrapped on the ruler, it is necessary to repair the broken line. The original repair broken line is manually repaired by the worker with a repair knife, because it has many shortcomings as follows: 1.Technical requirements of the water level higher; 2.As a manual operation, repair the line is not straight; Repair line width, deep is not