Snap-on's new TechAngle wrench uses leading-edge, patented technology to save time and increase accuracy and quality. The Snap-on TechAngle wrench uses the latest computer technology based on the same gyroscopes that keep helicopters flying level to allow the technician to apply a torque load, and then to read out the additional applied angle with one simple-to-use tool. No need to turn by estimate. No protractors. No fitting stuff into tight places.