过去,我厂没有三米测长机。许多大尺寸量具如内径千分尺、外径千分尺校正杆等的检定难以解决。我们遵循伟大领袖毛主席的教导,决心自力更生,在检查科的大力支持和领导下,组成了以工人为主体的三结合设计小组,利用本国本厂的有利条件,并得到各车间大力支援,群策群力,一台性能 In the past, I did not measure three meters long machine. Many large-size measuring instruments such as diameter micrometer, diameter micrometer calibration rod and other tests difficult to solve. We follow the guidance of Chairman Mao, the great leader, and are determined to become self-reliant. Under the strong support and leadership of the inspection department, we have formed a three-in-one design team with workers as the main body. We use our factory’s favorable conditions and are greatly supported by the workshops. A performance