Bosch Rotation Laser GRL 300 HV Professional Easy handling with horizontal and vertical self-levelling This GRL 300 HV Laser is easy to operate thanks to one button per function, and self-explanatory display. It is also easy to set up in both the horizontal and vertical modes due to automatic self-levelling of 8% (± 5°). The shock warning function, which can be switched on and off, prevents levelling errors in the event of shocks and vibrations. FEATURES Point, line and rotation modes for optimum visibility High accuracy of 0.1 mm/m High level of robustness: fully functional, even after being dropped from a height of 1 m Dust and splash protection IP 54 SPECIFICATION Laser Diode: 635 nm, < 1 mW Laser Class: 3R Levelling Accuracy: ± 0.1 mm/m Self-Levelling Range: ± 5° (8%) Rotation Speed: 150, 300, 600 rpm Tripod Thread: 5/8\" Weight Approx: 1.8 kg Length: 190 mm Width: 180 mm Height: 170 mm Colour of Laser Line: Red