Bosch GCL 12V-50-22 CG Professional Cordless Combination Laser (Blue/Black, Green Laser Lines and Plumb Points, RM 20 Rotating Mount Included)

On a busy construction site, precise alignment is non-negotiable. The Bosch GCL 12V-50-22 CG Professional combination laser delivers green horizontal and vertical lines plus two plumb points, making it the go-to tool for electricians, drywall installers, and carpenters who need fast, accurate layout. With a range of 20 m without receiver (extendable to 50 m with the optional LR 7 receiver), it handles everything from squaring walls to transferring points between floor and ceiling.

Key specifications

• Laser class 2, green beam (500–540 nm, <10 mW) for excellent visibility
• Working range: up to 20 m without receiver, up to 50 m with receiver
• Line accuracy: ±0.3 mm/m; plumb point accuracy: ±0.7 mm/m
• Self-levelling range ±4°, levelling time 4 s
• Dust and splash protection IP 54
• Power: Bosch 12V Li-ion battery or 4 x AA (with optional adapter)
• Operating time up to 10 h in 2-line mode
• Bluetooth connectivity for remote control via smartphone app
• Includes RM 20 Professional motorized rotating mount
• Tripod threads: 1/4" and 5/8"

Why choose it

The green laser lines are up to four times more visible than red, even in bright indoor conditions. The RM 20 mount lets you rotate the laser remotely from your phone, saving trips back to the unit. With IP54 protection, it shrugs off dust and splashes, and the 12V battery system is shared with other Bosch Professional tools, so you can keep working without interruption.

Ideal use cases

• Aligning wall tiles, kitchen cabinets, and partition walls
• Transferring reference points from floor to ceiling for lighting or HVAC
• Squaring layouts for framing and drywall installation
• Setting out gradients and slopes with the rotating mount
• Indoor and outdoor levelling tasks with optional receiver

Good to know

The combination laser projects two lines (horizontal and vertical) and two plumb points (up and down). The plumb points have a maximum working range of 10 m up/down. Operating temperature is -10 °C to 50 °C, storage -20 °C to 70 °C. The tool is compatible with the Bosch 12V Professional system and comes with a storage case for safe transport.