Product Details
The Proto® 1/2" drive ratcheting head micrometer torque wrench features a torque range of 30-150 ft-lbs and comes with a NIST certificate calibrated to +/- 3% in the clockwise direction and +/- 6% in the counterclockwise direction. Calibration is achieved through mechanical loading of each wrench in a horizontal position, followed by a three-click test at 20%, 60%, and 100% of the maximum instrument capacity. The certification documents are traceable to the National Institute of Standards and Technology (N.I.S.T.). This torque wrench is manufactured to meet precision and highly accurate applications, making it suitable for military and aerospace use.
