Self-Leveling 360-Degree Cross Line Laser Projects bright lines; ideal for tile alignment, wall studding, windows, doors, etc. 360-degree horizontal laser provides all-around leveling coverage over a 60 ft. diameter Accuracy: 1/8 in. at a range of 30 ft. Three laser-line modes: Level, Plumb and Cross-Line Self-levelling capability when within 4Degree of level Class II laser product, Output &lt; 1mW Includes a 1/4"-20 to 5/8"-11 threaded screw adapter for tripod