To check the dimensions S1 minimum and S1 maximum of E27 caps on finished lamps.
檢驗成品燈上E27燈頭尺寸S1的大值和小值。
Testing 測試方法:
When the cap on a finished lamp has been pushed into the gauge as far as it will go, the plunger surface “W” shall be co-planar with or project beyond surface “X” but it shall not project beyond surface “Y”.