The Ascot Supply 1/2" Drive Micro-Adjustable Torque Wrench is a dual scale calibrated, dual direction torque wrench that features a positive lock with spring loaded pull-down lock ring. It is fast, accurate, and easy for the operator to set, the company says. With an easy-to-read laser marked scale, an accurate torque is easy to achieve. The ergonomic comfort grip reduces user discomfort. It has a range of 50-250 ft-lbs with an accuracy of +/-4 percent clockwise and +/-6 counter clockwise.