STANLEY 177123 CROSS LINE LASER & POLE KIT Up to 25m visible workingrange Projects 1 horizontal & 1 vertical line to create a bright finelined red laser Cross Magnetically damped pendulum auto self levels Outoflevel indication 14 threaded base Operates on 3 x Aa batteries Pendulum mechanism latch for safe transportation Lshaped support clamp bracket fits pole door edges etc Extra magnetic mount included Floor to Ceiling Pole kit extentable up to 27m high