The Spectra Precision® LT52G Laser Tool is an automatic self-leveling multi-purpose tool that can be used in a wide variety of construction applications. Ultra-bright green laser beams make it ideal for use in bright ambient light conditions. It eliminates the need for a contractor to purchase two tools - a 5 beam pointer and a crossline laser - by combining both into one versatile product. For interior building and remodeling, the laser is used for horizontal and vertical alignment, wall layout, point transfer up and down, wall tiles, finish carpentry and 90 degree squaring. The lines and points generating by the green beam lasers are the brightest in the industry. Robustness is assured with a 3 foot drop specification.