The Spectra Precision® LT58G Laser Tool provides three bright green 360° laser lines and is ideal for ceiling work. Other applications include interior wall layout, point transfer, mechanical, electrical and plumbing layout and alignment, tile layout and finish carpentry. The LT58G is ideal for working in bright interior environments due to the superior visibility of the ultra-green beams. The automatic self-leveling multi-purpose unit is compact, lightweight and easy to use with its included ceiling mount. The optimized adjustable mount attaches to all types of ceiling track, including shadow track. The 2 vertical green beams are 90° apart. They can be used for 90° layout, plumb work and floor-to-ceiling point transfer. The LT58G contains a powerful rechargeable Lithium-ion battery that provides up to 25 continuous hours of green beam operation. It also can be operated directly with AC power. This eliminates the cost and waste of replacing alkaline batteries every day. The unit is compact, lightweight and easy to mount. Installations on high ceiling grids will be a quick, easy task compared to conventional heavy rotating lasers and cumbersome mounts. A tough housing is designed to withstand the rigors of the professional construction environment. This rugged tool is specified to withstand a 3 foot (1 m) drop test.