Knurled handle for a non-slip grip; Easy-to-read stamped scale on beam and thimble collar; Positive lock with spring-loaded pull down lock ring; Fast, accurate and easy to set; Teardrop ratchet head; 36-tooth gear; Meets ISO 6789 specifications; Calibrated on test equipment complying with ASME B107.300-2010 accuracy requirements; Comes in blow-molded storage case with instructions and calibration certificateSpecifications: 20-100 ft.-lbs.; 30.5 - 138.9 NM; Accuracy: 4% CW from 20% to 100% of full scale; Length: 16-1/2\"Assembly Drawing; ATD-12502 Owner's Manual; ATD-12502A Owner's Manual