| 摘要 |
PROBLEM TO BE SOLVED: To prevent a failure in tightening due to confusion of a plurality of electric tools with different specified tightening torque. SOLUTION: An electric tool includes a motor 1 serving as a driving source, a driving part 2 for tightening by an output from the motor 1, a torque detecting part 5 for detecting the tightening torque of the tightening, and a control circuit 6 for shutoff operation of stopping the tightening when the tightening torque detected by the torque detecting part 5 reaches a specified tightening torque value and also lighting up a tightening completion indication. A tightening completion indicator for indicating the tightening completion makes the indication in a prespecified color. The tightening completion indication is made in the color specified for the tool. COPYRIGHT: (C)2009,JPO&INPIT
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