PLS 4 Red Cross Line Laser Level KIT with Plumb, Bob and Level, PLS-60588 by Pacific Laser Systems Combines plumb points with level and plumb lines Point-to point accuracy +/- 1/4-Inch @ 100 feet Cross line accuracy +/- 1/8-Inch @ 30 feet Includes floor base, pouch, magnetic wall bracket, case and SLD laser detector Designed, assembled, calibrated & boxed in the USA Laser Class-II; Laser Type-635nm, &lt;1mW