BS1363-1图5规|13A英式插头插脚尺寸量规|英国插头插销量规|Figure 5 gauge|Figure 5 Gauge for plug pins
With the gauge in an approximately vertical position and the engagement surfaces of the plug and the gauge parallel to each other, the line and neutral pins shall be entered into the gauge for a distance not exceeding 2 mm. The plug shall then enter the gauge fully when a force of 10 N or less is applied to the centre of the plug at right angles to the engagement surface and without any additional force being applied to the pins to bring them into alignment. In the case of plugs with ISODs, due to the flexibility of plastic materials some additional alignment of the ISOD is allowed when inserting into the Figure 5 gauge. Where alignment cannot be maintained the test given in BS 1363-2:2012, 13.8, shall be applied and the maximum withdrawal force from a socket-outlet conforming to BS 1363-2 shall not exceed 36 N.