From the Manufacturer KD Tools Dial Indicator Set with on/off switch incorporated in stand. Features 2-1/4 inch English dial gauge with range of 0-1.3 graduations of .001. Centered V-magnet for strongest grip on round or flat surfaces. Powerful 130 pounds pull and two magnetic mounting surfaces - bottom and back. Swival adapter to mount all AGD dial indicators with lug backs. Has universal dovetail clamp for dial test indicators. Comes with deluxe on/off switch stand. All KD Mechanic's Hand and Specialty Tools are designed to fulfill highly specialized functions. KD Tools are proudly made with the finest components under the most stringent manufacturing guidelines. Made for every day use and guaranteed for life.