To provide a power tool capable of being set at any angles and disabling operation at an unintentional angle by providing a function to automatically restrict operation when the angle is not the predetermined angle.

The power tool includes an inclination sensor 5 detecting inclination of a shaft of the tool 4, and a control device 6 controlling not to operate the tool 4 when the data output by the inclination sensor 5 is outside the predetermined range. The tool operation is disabled if the tool does not match the axis of a bolt erected with a predetermined angle, for example.