The versatile Spectra Precision Laser LP40 is a self-leveling plumb up/down, level and square beam pocket laser. Offering unmatched durability, the versatile LP40 is ideal for a range of applications including installing fixtures, putting in walls and leveling foundations. The LP40 projects four beams up to 30 m (100 ft) and can withstand a drop of up to 1 m (3 ft) onto concrete and still provide consistent accuracy. One beam points up while another points down to create a plumb up and plumb down reference. The other two beams are offset at 90 degrees to each other, pointing out horizontally to create level and square reference points. The LP40 also features a self-leveling mechanism for consistent repeatability so you can be sure your positioning is accurate. Built-in magnets allow the LP40 to be securely fit directly to drywall track.