Bosch GCL2-50G-BT Combi Laser Green Lines Green Plumb Points c/w Tripod, Mount, Target & Pouch c/w 4x AA Batteries. The GCL2-50G-BT Professional provides working range lines up to 15mtr (dots up to 10mtr), expandable up to 50mtr with the optional receiver Bosch LR7 Laser Receiver plus fast and secure mounting using the strong magnets on the RM10 Rotating Mount enables the precise positioning of laser lines around plumb points.
eBay