Proto J6015C 1/2" Drive Fixed Head Micrometer Torque Wrench 30-150 ft-lbs

Calibrated to +/- 4% in clockwise direction and +/- 6% counter clockwise direction 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.