Bosch GSL2SET Floor Surface Laser is theworlds first floor surface laser in a complete set. Displays surface irregularities precisely using a simple principle one line-flat, broken line- not flat. Includes a remote control for easy and comfortable operation. It is ideal for everyone who works with floor surfaces such as site managers, surveyors and all flooring trades. The laser lines are clearly visible on surface up to 10m and 20m with target plate. This robust unit comes with IP54 dust and splash protection and features a new innovative method of checking surface evenness, this is aimed at saving time. This unit features a carry handle allowing easy transportation and a battery status LED showing the battery life. Working range 10m 20m with target Accuracy 0.3mmm Batteries Uses 3 x AA Laser Class 3R Run time approx 15 hours