| 摘要 |
<p>A torque wrench which comprises a first spanner (10) with a first shank (11) which extends into one end of a principal tube (14) and which is pivotally secured therein by a first head-pin (20), the first shank having an end (15) which co-acts with a first spring-loaded roller assembly (17) within the tube, and wherein a second spanner (12) with a second shank (13) extends part-way into the other end of the tube (14), the second shank having an end which co-acts with a second spring-loaded roller assembly (18) within the tube in an opposite direction to the first shank, said second shank being adjustable longitudinally with respect to the principal tube so as to set the tension in a spring (19), which tensions both the first and second spring-loaded roller assemblies, whereby the torque applied through the first spanner to a nut or the like is set to a predetermined amount.</p> |
