我厂工具车间万能量具修理组的工人刘礼江同志,创造了研磨大型千分尺测量面的工具,解决了修理大型千分尺的困难,使不合格和报废的大型千分尺能修复到国家计量标准,为国家节约了很多财富。一般修理300公厘的千分尺,是利用铸铁研磨杆(如图1)涂上金铜砂,让千分尺测量面与研磨杆相接触,用手旋转研磨杆,使两测量面产生研磨作用。但是对于300～1000公厘的大型千分尺,如果也采用这种方法,不但劳动强度大,而且达不到要求。采用刘礼江同志所创造的工具来研磨大型千分尺,效果很好,现在介绍 Comrade Liu Lijiang, a worker in the gantry repair shop of our factory, created a tool to grind a large micrometer measuring surface and solved the difficulty of repairing a large micrometer. The unqualified and discarded large micrometers could be repaired to the national metrological standards for the national economy A lot of wealth. The general repair of 300 mm micrometer, is the use of cast iron grinding rod (Figure 1) painted bronze sand, the micrometer measuring surface and the grinding rod in contact with the hand rotating grinding rod, so that the two measuring surface grinding effect. But for the 300 ~ 1000 mm large micrometer, if you also use this method, not only labor-intensive, and can not meet the requirements. The use of tools created by Comrade Liu Lijiang to grind large micrometers, the effect is very good, and now introduced