Micrometer Torque Wrench Drive Size 3/4 In. Head Type Fixed Calibration Certificate No Primary Scale Range 100 to 600 ft.-lb. Primary Scale Increments 2.5 ft.-lb. Standard Tool(Accessory Needed for Tethering) Secondary Scale Range 152.5 to 830.4nm Secondary Scale Increments 3.38nm Overall Length 41-1/2 In. Rotation CW/CCW Accuracy +/-4 Percent CW +/-6 Percent CCW of Torque Reading @ 20 to 100 Percent of Full Scale Audible Click Setting Factory Min Number of Cycles 5000