McMaster 85555A319 Adjustable Torque Wrench with Certificate Quick Release, 1/2", 30-250 ft.-lbs. and 40.7-338.9 NM

No need to pull the socket off the tool—push a button to release. Set torque and the wrench indicates when it's reached with an audible click and an impulse in the grip. To relieve pressure on the spring and maintain calibration, set torque to the lowest reading on the scale when not in use. Wrenches come with a calibration certificate that is traceable to NIST and includes the test measurements that confirm accuracy.

Note: Accuracy ratings do not apply to the lower 20% of the torque range.