Combining one-button operation, Pulse Power technology, and the Impact Protection System to protect the system's core, the self-leveling PMP 42 Plumb Laser and PMP 45 Plumb and Square Laser allow verticals to be checked easily and quickly. They also can transfer any point from floor to ceiling with high accuracy. The PMP 45 Plumb and Square Laser is a multipurpose laser ideal for plumbing and squaring. It projects two laser points 90 degrees apart on the same plane, plus an additional point at 90 degrees orthogonal to the plane. Hilti Inc. 800-879-8000.