指定用于电子闪光设备的电气连接器（插头和插座）的类型和尺寸。给出了有限数量的连接器类型，以及用于连接闪光灯单元和闪光灯同步器跳线的尺寸。

Specifies type and dimensions of the electrical connectors (plug and socket) to be used for electronic photoflash equipment. Gives a limited number of types of connector and the dimensions to be used for the connection between flash unit and flash synchro-cords.