The Mac Tools 1/2” Drive 50-250 ft-lb Direct Torque Wrench, No. TWV250DR, meets ASME B107.300 specifications with an accuracy of +/- 4 percent. The torque wrench features a direct read scale for easy read-out. Using a magnifier and number scale help reduce errors and improve efficiency when setting a required torque. The product also features a sealed body rated at IP54 to help eliminate dust ingress for durability and is offered in a 1/2" drive 30-150 ft-lb and 3/8” drive 7-40 ft-lb version.