E17灯头止规 7006-28F-1
Not Go gauge for E17 caps on finished lamps
目的：
Purpose:
检验成品灯上E17灯头螺纹外径（尺寸d）。
To check the minium outside (major) diameter of the screw thread, dimension d, of E17 caps on finished lamps.
检验：
Testing:
当量规套在成品灯（灯头向上）的灯头螺纹上时，灯头中心触点不应凸出X面。检验仅利用量规自身质量进行。
When the gauge is placed over the thread of the cap on a finished lamp, held cap uppermost, the central contact shall not project beyond surface X.
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