The DEWALT DW073K Cordless Rotary Laser Kit provides an effective way to work faster, smarter and much more precisely on a wide variety of layout and installation jobs. The 360-degree manual-leveling laser system is accurate to within -1/4 -inch per 100 ft., and has dual side-by-side laser diodes for an extremely bright, visible beam. The unit comes calibrated and ready to work, with an indoor visibility range of 200 ft. (A digital laser detector will increase the operating range to 600 ft.) It features a protected rotary head and side impact roll cage for increased durability, variable-speed motor (0-600 RPM) for increased visibility, and integral wall, floor and tripod mounts for fast, easy set-up. There’s even a built-in bump sensor that alerts you if the laser is bumped after it has been leveled. The DW073K Rotary Level has a multi-voltage adapter that accepts all DEWALT batteries ranging from 9.6 to 18 volts. Use this tool to layout suspended ceiling grids, walls and partitions, and to level cabinets, shelving, floors and soffits. The Rotary Laser comes with an 18-volt battery, one-hour charger, laser target card, laser enhancement safety glasses, and heavy-duty kit box. It’s backed by DEWALT’s 90-day money-back guarantee, one-year free service contract (including two free calibrations), and three-year limited warranty.