使用方法
The gauge is shown in the test position. In the rest position the plunger shall be above plane V.
图中所示量规柱塞处于检验状态，当柱塞处于静止状态时，W面应比V面缩进更深些。
| Reference 尺寸符号 | Dimension 尺寸(mm) | Tolerance 公差(mm) | Reference 尺寸符号 | Dimension 尺寸(mm) | Tolerance 公差(mm) |
| D | 26.55 | +0.0/-0.02 | M | 25 | +0.02/-0.0 |
| F | 27.1 | +0.0/-0.02 | N | 28.3 | +0.02/-0.0 |
| G | 34 | +0.0/-0.02 | O | 37.8 | +0.02/-0.0 |
| H | 14 | ±0.1 | P | 2 | ±0.1 |
| J | 53 | +0.0/-0.03 | T | 21.5 | +0.02/-0.0 |
Purpose目的：
To check lamp dimensions for contact making in IEC holders.
检验灯在灯座中有关接触性能的尺寸。
Testing 测试方法：
The shape of the lamp with regard to the fit in the lampholder is assured to be correct. If the lamp can be pushed into the gauge till plane W reaches plane V or project beyond it.
如果灯插入量规时，W面可与应V面共面或凸出V面，则可认为灯的形状与灯座的配合是合格的。
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