The Draper Expert 1/2" Drive Angular Torque Gauge is a precision measuring tool designed to work with any half-inch square drive torque wrench for accurate angular tightening applications. This specialist gauge enables tradespeople to follow manufacturer specifications that require torque-to-angle tightening methods, commonly used in automotive and engineering work. The rotating index line provides a clear visual reference, allowing operators to monitor the exact angular rotation applied during the final tightening stage. This is essential for applications where fasteners must be torqued to a specific value then rotated through a prescribed angle to achieve proper clamping force and load distribution. Ideal for automotive mechanics working on cylinder heads, connecting rods, and other critical fasteners that require precise angular tightening beyond initial torque values. The half-inch square drive fitting ensures compatibility with standard torque wrenches used across professional wor