1/2 Sq. Dr. Angular Torque Gauge Expert Quality, designed to be used with any 1/2 sq. drive torque wrench. Rotating index line allows operator to accurately tighten fixing to manufacturer's exact angular specification. Clearly printed in 2 degree increments, then 10 degree movements and numbered every 30 degrees around the full 360°. Supplied with fully adjustable reaction arm. Display packed.