24" Digital Level with Laser and Durable Aluminum Magnetic Base, Compatible with all &frac14;&rdquo; Threaded Tripod Mounts Accurate angles to 1/10 degree, and 1/20 degree at level or plumb positions in high-accuracy mode Recalls last 9 angle measurements; audible indicator at 0, 45, 90 degrees and last recorded angle Easy-to-read digital display, and unit selection: degrees (Degree), % and IN/FT Laser dot projection visible at 100 ft. to support long-distance angle measurements Durable aluminum base with ruler scale and strong magnets Class II laser product, Output &lt; 1mW