1/2 Dr Micrometer Style Torque Wrench, 30 - 150 Ft Lb. Large scale window with vernier scale in 1 Ft Lb increments. Locking adjustment knob on the end of the handle. Forward and Reverse Ratcheting Head. DIN EN ISO 6789-2003 Type II Class A +/- 3% accuracy (+/- 4% accuracy is the Industry standard for this class torque wrench). Calibration Certificate included.