Use: Torque angle gauge for fasteners where manufacturers specify both torque and angle parameters. With this gauge, the professional mechanic can meet the requirements of the new specs to turn the fastener a specified number. Additional information: 1.27 cm. Additional angular movement after torque is applied. Clear dial, easy to read. Knurled knob to adjust the angle. 2. EASY TO READ: Angle gauges measure up to 360 degrees in 2 degree increments and 10 degree intervals; clear, bold lines for easy identification ensure proper clamping; easy to zero for future applications by turning the tool housing 3. Adjustable Design: The adjustable arm has 2 different lengths, flexible to use. Professional manufacturing, 1/2 drive torque angle gauge has high characteristic and stable performance. 4. Professional: Designed for professional auto mechanics and heavy-duty applications. CR-V chrome-vanadium steel construction, manual reset