A torque wrench incorporating a vibratable handle assembly comprises a steel tube (11) having at one end an adaptor (12) to, in use, engage a tool head (18) and at the other end a hand grip (60) enabling a user to engage and operate the tool. Sensing means within the tube (11) generate a signal indicative of the torque on the tool head, and a motor within the tube (11) is responsive to the sensing means to cause the hand grip (12) to vibrate when the signal reaches a pre-determined threshold value.
