Wrench Calibrator Allows You to Verify:
Fasteners meet minimum bolt torque specifications.
Electric torque controlled wrenches are properly calibrated to achieve proper tension in the bolted joint.
Tension-control fasteners sheer off at the correct tension.
Direct Tension Indicating (DTI) washers are indicating at proper tension.
Bolting crew understands how to achieve proper tension in all types of fasteners.
For Accurate Measurement of Bolt Torque In Short Structural Fasteners

Whether calibrating power wrenches or testing fasteners, you need no special training, no additional equipment. Simply clamp the calibrator to a beam or column and insert your fastener. Tightening it gives a direct dial pressure reading equivalent to the tension created in the fastener — guaranteed accurate within 1% every time.

Does electric torque control wrench need calibrated? How?
Yes. Use Hitens Wrench Calibrator. First demonstrate with the calibrator that your tightening procedures produce proper bolt torque. Then consistently apply these procedures to the job itself.
Electric torque controlled wrench need to be calibrated before and after use in lab.
Calibration is necessary for Wrench Calibrators at least once a year to ensure that they are operating accurately and reliably. Your tools will be skillfully calibrated and returned to you in record time, so you can get back to work as soon as possible.