| 摘要 |
A ratchet wrench having a lamp circuit assembly mounted in a stepped longitudinal center through hole defined within a ratchet unit thereof, the lamp circuit assembly including a lamp holder, a battery cell, a metal spring connected between the lamp holder and the battery cell, a switch fastened to the ratchet unit by a screw joint, and a metal contact plate turned with the switch to close/open the circuit of the battery cell so as to turn on/off the lamp holder.
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