PROTRACTOR: Thanks to its robust chrome-vanadium steel construction, this rotary protractor is extremely durable. You will therefore enjoy this small tool for a long time. VERSATILE: This protractor can be used to tighten screws at the correct angle using a wrench, torque gauge, ratchet, open-end wrench, socket, and much more. ACCURACY: Thanks to the high accuracy of the gauge, repairs and other tightening work can be determined to the correct degree. near. PRODUCT DETAILS: Measuring range: 0° - 360°, scale: 2° travel, drive: 1/2", weight: approx. 150g, locking screw with angled wrench, holder with locking screw for angled wrench. TIGHTENING FORCE: Since a defined tightening torque must be applied beforehand when tightening screws, a torque wrench is always recommended. Its performance covers both the torque and the tightening force required to maintain the desired angle of rotation.