The Bosch GCL 2-50 Professional Combi Laser is compact and versatile, ideal for all levelling applications. It projects horizontal and vertical laser lines and two centred plumb points with optimal visibility. Use the RM 1 Professional Rotating Mount for aligning the laser lines and for versatile mounting of the tool. Receiver mode allows you to work with the Bosch laser receiver LR 6 and LR 7 for a working range up to 50 metres. Supplied with: 3 x AA 1.5V LR6 Batteries. 1 x LR 6 Professional Laser Receiver. 1 x RM 1 Professional Rotating Mount. 1 x Bracket for LR 6/7 Laser Receiver. 1 x Ceiling Clamp. 1 x Laser Target Plate. 1 x 1/2 L-BOXX inlay for tool. 1 x Carrying Case. Specifications: Accuracy: +- 0.3mm/m. Plumb Point Accuracy: +-0.7 mm/m. Self-levelling Range: +-4°. Working Range: 15m. Working Range with Receiver: 50m. Max. Working Range of Laser Points: 10m. Laser Diode: 630 - 650 nm, < 1mW. Laser Class: 2. Levelling Time: 4 Seconds. Power Supply: 3 x AA 1.5V LR6 Batteries (supplied) Operating Temperature: -10-50°C. Storage Temperature: -20-70°C. Dust and Splash Protection: IP54. Tripod Thread: 1/4in, 5/8in. Compatible Laser Receivers: LR 6 + 7. Weight: 0.49kg.