| 摘要 |
A testing device to close a circuit between first or second sections of a pair of lines within a connector block in which the first and second sections of each line are normally connected by pairs of connector parts with which the sections of the lines are connected, a socket opening at each connector part and pairs of electrically connected contact prongs removably engaged in the socket openings, the testing device includes a manually engageable case carrying two prongs have free ends projecting therefrom and a bridge line within the case and connecting the prongs, the two prongs of the device are selectively removeably engageable in the socket openings related to the connector parts with which the first section the two parts are connected and in the socket openings related to the connector parts with which the second sections of the lines are connected.
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