工厂里最常用的百分表或千分表表座是磁力表座、万能表座和90°表座。为了使用和保管方便,现介绍一个小经验,即磁力表座的扩展使用,使一种表座当三种表座使用。具体做法是:做一个矩形块,尺寸可以选为220mm×60mm×25mm,材质为中碳钢或铸铁,工作面经磨削或刮研,粗糙度在R_a(0.8)以 The most commonly used dial indicator or dial gauge in the factory is a magnetometer holder, a universal holder, and a 90 ° holder. In order to use and custody of convenience, is to introduce a small experience, that the expansion of the use of magnetometer seat, so that a table seat when the use of three kinds of table. The specific approach is: to make a rectangular block, the size can be selected as 220mm × 60mm × 25mm, made of medium carbon steel or cast iron, the work surface grinding or scraping, roughness R_a (0.8) to