To provide a torque wrench enabling a worker to easily recognize proper usage such as a fastening direction and completion of fastening or the like.
The torque wrench 10 is provided with an operation arm 12, a head part 14 arranged rotatably to the operation arm at the tip of the operation arm, and a coil spring 42 for energizing the head part in a prescribed direction to the operation arm. The torque wrench 10 is used for fastening a pair of members (a male screw part 104 and a screw hole part 112a) to each other by screwing. The torque wrench 10 is also provided with an indicating lamp 54, which indicates the fastening direction of the other of a pair of the members to one of a pair of the members so as to be easily recognized by the worker, and a storage battery connected to the indication part and supplying power for lighting the indication part.
Satoshi Kono
Makoto Nakamura
Kurata Masatoshi
Takashi Mine
Yoshihiro Fukuhara
Sadao Muramatsu
Ryo Hashimoto
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