E27螺口灯头量规止规操作方法计量厂家

 e27螺口灯头量规止规 (7006-28a-1)

目       的：用来检测e27成品灯上的灯头螺纹大径d的Zui小值。

使用方法：当量规以自重套在灯头螺纹上时，成品灯上的灯头的中心触点不应凸出量规的x面。

purpose：to check the minimum outside(major) diameter of the screw thread , dimension “d”,of e27 caps on finished lamps shown on sheet 7004-21

testing: when the gauge is placed over the thread of the cap on a finished lamp,held cap uppermost ,the centre contact shall not project beyond surface “x” , only the weight of the gauge itself shall be used in the best.