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 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 certificate Specifications: 50-250 ft.-lbs. 74.6 – 345.7 NM Accuracy: ± 4 percent CW from 20 percent to 100 percent of full scale Length: 25-1/2IN .