產品規格
S1規 Go for S1 dimension gauge (IEC 7006-27C-1)
圖中所示量規塞處于檢驗狀態。當柱塞處于靜止狀態時，W面應比X面縮進更深些。
| Reference 尺寸符號 | Dimension/尺寸（mm） | Tolerance/公差（mm） |
| d | 26.45 | +0.03/-0.0 |
| H | 14 | ±0.1 |
| M | 13 | ±0.1 |
| O | 23.0 | ±0.03 |
| S | 8.5 | +0.01/-0.0 |
| V | 1.5 | +0.02/-0.0 |
Purpose目的：
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”.
當成品燈的燈頭插入量規時，塞柱的W面應與X面共面或凸出X面，但不得凸出Y面。產品相冊
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