Metal Handle Dual Scale. The metal handle series offers the user a rugged, industrial strength torque wrench able to withstand the rigors of professional use. Handles are lightly knurled for a tough, non-slip grip.; Features; Dual scale, calibrated dual direction; Positive lock with spring loaded pull down lock ring; Fast, accurate and easy to set; Easy-to-read laser marked scales; Most feature quick release buttons which provide good socket retention as well as easy socket removal; Accuracy: ± 4% CW ± 6% CCW of indicated value, CW, from 20% to 100% of full scale; Individually serialized with matching certificate of calibration traceable to N.I.S.T.