Dual Beam Rotary Laser Pkg includes Aluminum Tripod, 8ft 3 section Aluminum builders rod, Laser Detector, target, ceiling mount and laser glasses. Working range is 800 feet diameter, accuracy is 1/4" at a 100 feet. The Lm30 has unique features such as long and short scan modes that creates a Laser Chalkline to increase visibility, spot mode for 90 degree point to point mode, variable speed mode for maximum visibility, one person, one button operation, low battery indicator, protected manual leveling vials both horizontal and vertical. Applications include cabinets, shelves, carpentry, marking elevations, masonary, foundations, septic work, wall and partitions, fencing, floors, siding installations, door and windows, etc. Hand Tools > Levels > Laser