Designed for the advanced laser user, this rotary laser kit is feature-packed to tackle any job - indoor or outdoor. The laser self-levels both horizontally and vertically, making vertical layout such as fencing, footings and drywall track quick and easy. Its electronically controlled dual-slope mode takes math out of the equation when checking grade or setting drainage. And the laser beam modes include dot, two adjustable line lengths and two rotational speeds (200 and 500 rpm). Accuracy is never a problem with this rotary laser - it features visual and audible alerts when it is beyond its leveling range. With the included detector, clamp, tinted glasses, target, battery charger, alkaline battery compartment, wall/ceiling mount, remote control, NiMH rechargeable battery pack and hard-shell carrying case, you'll have everything you need to get your job up and running.