随着我国科学技术和工业生产的不断发展,机械加工的精度也在不断提高。车间常用的游标卡、百分尺等已经满足不了精密机械零件生产的需要。若用立、卧式光学计,用块规比对测量,比较麻烦,测量时间长,还只能一个人观察示值。我厂运用直线光栅技术,搞了一台立式测长仪,使用方便、显示准确,如有 With the continuous development of science and technology and industrial production in our country, the precision of machining is also constantly improving. Commonly used in the workshop vernier card, such as foot gauges can not meet the needs of the production of precision machinery parts. If using vertical and horizontal optical meter, with block gauge than the measurement, more trouble, the measurement time is long, only one person can observe the indication. I plant the use of linear grating technology, engage in a vertical length measuring instrument, easy to use, accurate display, if any