ACDelco ARM601-3 3/8" (3.7 to 37 ft-lbs.) Electronic Digital Torque Wrench
(/Nm) and angle degree for their job. ACDelco ARM601-3 3/8" (3.7 to 37 ft-lbs.). Electronic Digital Torque Wrench. The most important features to look for in a digital torque wrench are accuracy, ease of use, and versatility.