Computer-Controlled Power Tool

The figure depicts the exterior appearance of a pistol-grip rotary power tool that can be used to turn a drill bit, wrench socket, screwdriver, or other tool bit clockwise or counterclockwise at a controlled speed or torque. This tool is an updated version of the one described in "Pistol-Grip Torques-Measuring Power Tool" (GSC-13706), NASA Tech Briefs, Vol. 23, No. 7 (July 1999), page 36. Like other tools that it superficially resembles, it contains an electric motor drive powered by either a battery or a power-supply circuit with a standard power-line connection. Unlike other such tools, this tool also contains the following: