1. A design of torque wrench in numerical is introduced.

2. The measuring unit of torque wrench is pound - inch or kilogram - centimeter.

3. Hydraulic torque wrench: used to mounting and dismantling big bolts.

4. Torque wrench required periodic calibration, and keep the blanket latching system in good condition.

5. Familiar with Torque Wrench, Power Tool and Air Tool structure and repair.

6. Monitoring tightening bolts questions you will determine whether the technicians of the torque wrench required courses.

7. Connect the test cable and tighten to specified torque with a torque wrench.