The PLS5 laser system will provide true point-to-point plumb, level, and square reference. Commercial and residential builders will save layout time and increase production on every job site with layout, installation, and quality control achieved quickly and with more accuracy than ever before. With the system's patented technology, you can establish 90-degree angles instantly and plumb from floor to ceiling or from 50 feet off the ground. The PLS5 is self-leveling within 8 degrees, has a safety shutoff feature to ensure calibration, and is accurate to within 1/8 of an inch at 100 feet. The compact PLS5 system includes laser, layout target, wall bracket, and floor base. It is battery-powered (three AAA batteries), made in the USA, and has a one-year guarantee