The Bosch GLL 3-80 C Professional 360 Line Laser projects 3 x 360 lines. Allows for simultaneous horizontal and vertical levelling applications around the entire room for highly efficient work, while the tool's intuitive user interface offers easy operation. High-powered diodes ensure high visual clarity. The GLL 3-80 Professional is perfect for fast self-levelling and it is capable of self-levelling on non-level surfaces up to +- 4 in less than 4 seconds. This line laser is compact, easy to handle, and extremely robust (IP54) Developed for suspending drop ceilings, building floors, installing windows, mounting shelves, laying drainage pipes, building framework for drywall, and laying tiles. Supplied with: 4 x AA 1.5V LR6 Batteries. 1 x Pouch. 1 x Laser Target Plate. 1 x Pouch. Specification: Accuracy: +- 0.3mm/m. Self-levelling Range: +-4. Working Range: 30m. Working Range with Receiver: 120m. Laser Diode: 630 - 650 nm, < 10mW. Laser Class: 2. Levelling Time: 4 Seconds. Power Supply: