Proto Adjustable Torque Screwdriver 1/4" Drive 20-100 In-oz J6104A

Purchased and used for one project to torque roughly two dozen set screws on a linear ball screw stage assembly. "The Proto J6104A (also referenced as J.6104A or simply 6104) is a 1/4" drive adjustable torque screwdriver with a range of 20-100 in-oz (inch-ounces), graduated in 2 in-oz increments. It offers ±4% accuracy (clockwise, from 20% to 100% of full scale), includes a 1/4" square drive that accepts a hex adapter for insert bits, and features a slip-type (cam-over) mechanism with a knurled adjustment sleeve. It's a heavy-duty industrial tool built to ASME B107.14M standards, roughly 6.5–7.2 inches long overall."