Hand tool e.g. spanner, for screwing object, has output device, formed from sensor unit, having warning unit mounted on connection point of handle and operating head at end of handle, and auxiliary warning unit attached on surface of handle
摘要
<p>The tool has a rectangular-shaped flat handle (12) with an end having an operating head. An output device (20) is formed from a sensor unit (22), which is electrically connected with a strain gauge that is arranged in a specific area of the handle. The output device is equipped with a warning unit (30), which is mounted on a connection point of the handle and the head. An auxiliary warning unit (30a) is attached on a surface of the handle.</p>
