The int177318 spl3 fat max spot line laser has a working range of 30 metres it projects 3 beams front top and bottom plumb and is ideal for point to point it has a magnetically damped pendulum out of true level sensor and a magnetic pivoting base it is ip54 rated protected against splash and dust damage specification level accuracy 4mm 10m self levelling range4working range 30m power 3 x aa batteries supplied laser class 2thread 14in