Simultaneous Horizontal and Vertical Levelling With 3 x 360 Degree LinesThe Bosch Professional Laser Level GLL 3-80 enables simultaneous horizontal and vertical levelling with just one tool thanks to 3 x 360 degree lines--one horizontal and two vertical.The lines project around an entire room and from floor to ceiling, making it easier than ever both to collaborate with colleagues and avoid frequent repositioning.The device is highly accurate, delivering precise results within +- 0.3 mm/m */**, with a working range of up to 30m (or 120m with the additionally available LR 6 or LR 7 receiver). To reduce the need for manual adjustments, the device can self-level on non-level surfaces up to +/- 4 degree. When diagonal lines are needed, the device can also be positioned in lock mode.High-powered laser diodes provide excellent visibility. The laser level is robust, thanks in part to an IP54*** dust and splash water protection. It can be used for a variety of applications including building floors, installing windows, mounting shelves, laying drainage pipes and tiles, or building framework for drywall.*for the four horizontal intersection points**plus use-dependent deviation***Except for the lithium-ion battery and AA1 battery adapter.Items included:GLL 3-804x AA batteriesLaser target platePouchManualCarrying case