Self-levling point laser is accurate to ±1/4" @ 100'. Single lever power switch locks pendulum in the off position for added durability. Built-in magnetic pivoting bracket mounts easily on metal surfaces. Integrated track clearance enables users for fast and accurate bottom and top track installation. Overmolded housing helps maintain calibration under jobsite conditions. Focused laser beam keeps dot size small over longer distances for improved accuracy and visibility. This DEWALT High Performance Industrial Tool comes with a warranty package that includes: 90 Day Money Back Guarantee, 1 Year Free Service Contract & 3 Year Limited Warranty.