Bosch Professional Combi Laser(green laser range:up to 15m,4x AA battery GCL250G
15m Visible Working Range – Extendable with optional Bosch LR 7 Receiver (receiver mode always on). Bosch GCL 2-50 G Green Laser Level | Self-Levelling with Vertical, Horizontal Lines + Plumb Points | RM 10 Mount – 15m Range.