BOSCH GCL 2-15 G + RM 1 15m Green Line Laser Leveling Tool Bosch MeasuringFour times better visibility thanks to green laser lines Green horizontal and vertical lines for maximal visibility Multifunctional rotating mount for easy alignment of the laser lines around the plumb points Red plumb points for precise transfer application Working range: 15 m Accuracy: 0. 3 mm m Laser diode: Line: 500 540 nm, < 10 mW, Point: 630 650, < 1 mW Operating temperature from: 10 C Operating temperature: up to 50 C Operating temperature: 10