The Sealey Technicians Angular Torque Gauge 1/2"Sq Drive is designed to be used with any 1/2"Sq drive breaker bar.Designed to be used with any 1/2"Sq drive breaker bar.Tough composite dial and rotating index line allow operator to accurately tighten fixing to manufacturer s exact specification.Supplied with fully adjustable reaction arm.Essential measuring tool for the busy workshop.The Sealey Technicians Angular Torque Gauge has a tough composite dial and rotating index line allow operator to accurately tighten fixing to manufacturer s exact specification. It comes with a fully adjustable reaction arm. It is the essential measuring tool for the busy workshop.