测微表的示值误差,一般采用高精度等级的块规来检定,这种检定方法化费时间长,并要求检定人员具有一定的熟练操作水平,况且不能得出该表正反行程误差.我厂计量室按不同精度测微表用测长机配备光学计管及乌氏干涉仪光管作为检定标准,对该类表进行了检定,取得了良好效果,现介绍如下,供兄弟单位参考. Micrometer indication error, the general use of high-precision block rules to test, this test method takes a long time, and requires verification personnel have a certain level of proficiency in operation, and can not draw the table positive and negative travel error. I plant metering chamber according to different precision micrometer with a length measuring machine equipped with optical tube and U-tube interferometer light tube as the test standard, the type of table were tested and achieved good results, are presented below, for reference to the brothers unit .