我厂有些零件的窄沟槽底面之间的距离和中凹元柱直径,以前用测头为φ6.5毫米的一般外径千分尺只能以间接测量方法测量。这样费工时多,测量误差较大。在工业学大庆的群众运动中,我厂计量室的同志,积极面向生产,解决生产中的计量问题。他们根据螺纹千分尺可更换测头这一特点,自 The distance between the narrow groove bottom surface of some parts of our factory and the diameter of the hollow cell column can only be measured by the indirect measurement method with the conventional micrometer with the probe of φ6.5 mm. This labor-intensive and more measurement error. In the mass movement of Daqing in industry, the comrades of the measurement room of our factory actively faced the production and solved the measurement problems in production. They are based on the features of a threaded micrometer interchangeable probe