| 摘要 |
<p>In accordance with the teachings of the present invention, the torsion measuring principle has been embodied in the conventional type lever arm wrench with minimum friction, lag, free play, and maximum translation of the relative twist of the load carrying member. This has also been accomplished in conjunction with presetting torque load indicator instrumentalities which preclude errors and variations in reading and interpreting the usual indicators in all conditions of use. Torque measurements are possible, therefor, with a negligible error factor and nut turning operations are accurately measured under all conditions and capacities irrespective of human error and the position of applied force along the lever arm for effecting the turning operation.</p> |
