Stanley Proto J6060A 1/4-Inch Drive Ratcheting Head Micrometer Torque Wrench, 10-50-Inch Pound Calibrated to +/- 3% clockwise direction (for J6060A, calibrated to +/- 4% clockwise direction) Calibration is accomplished by manually loading the torque wrench Manufactured to meet standard industrial torque applications such as general industry, heavy equipment and maintenance