Fully self leveling, the PLS90 is a unique laser level. No more 3-4-5. Use your PLS90 and our universal base-tripod adapter for fast, accurate and dependable square layout for flooring-tile, framing (metal stud or wood), concrete foundations, pads and more The PLS 90 from Pacific Laser Systems is an interior and exterior laser level, designed specifically for laying out 90 degree angles. No More 3-4-5, sagging string lines, or guesswork. Get fast, accurate and dependable square layouts. Use the PLS90 in bright sunlight or interior environments, square on slab or square on slope applications. The PLS90 is easy to use with a working range of +/- 250 feet, a battery life of up to 30 hours and a self leveling range of 6 degrees. Use the laser on the ground or on a tripod - save valuable layout time.? PLS Lasers are designed by contractors for contractors. The PLS90 tool comes complete with carrying case, universal base, floor target, operating manual and a 1 year warranty. The PLS90 system and kit also includes a SLD laser detector. The 5/8-11 Tripod is included with the PLS90 kit. PLS Lasers – the professional standard. For more information please visit: http://plslaser.com/line-lasers/pls90