McMaster 85555A312 Adjustable Ratcheting Torque Wrench with Certificate, 20–100 ft·lbf / 27.1–135.5 N·m, 3/8" Square Drive

Set the desired torque within range and these wrenches will signal when it's reached. To relieve pressure on the spring and maintain calibration, set torque to the lowest reading on the scale when not in use. These wrenches come with a calibration certificate, which includes test measurements that confirm accuracy.

Torque-Limiting Click — An audible click lets you know when the set torque is reached.