Which device verifies torque wrench calibration?

• A. Temperature check
• B. Weight and level arm tester
• C. Visual inspection
• D. Battery check

Answer: (B)

Verifying torque wrench calibration means confirming that the wrench delivers the torque it is set to. A weight and level arm tester provides a precise, known torque by applying a calibrated weight at a defined distance from the wrench handle. This setup lets you compare the wrench’s indicated or triggered torque with the actual applied torque, showing whether the tool is within the specified tolerance. If the readings match within tolerance, calibration is verified.

Temperature checks don’t test the actual torque output, since environmental conditions affect readings but not the wrench’s accuracy. Visual inspections look for wear or damage, not the correctness of the torque value. Battery checks pertain to power or digital readouts, not to the accuracy of the torque delivered.