Foot Pound Ratchet Head Torque Wrench, 1/2 in, 30 ft lb-150 ft lb

Calibrated to +/? 4% clockwise direction and +/? 6% counter clockwise at 20% to 100% of full scale. Calibration is accomplished by manual loading the torque wrenches. Manufactured to meet standard industrial torque applications, general industry, heavy equipment, and maintenance..