The Spectra Precision LT20 Crossline is an easy-to-use, automatic self-leveling laser tool that projects ultra-bright horizontal and vertical lines. This tool includes a durable housing with generous overmold to withstand the rigors of the professional construction environment. With its rugged design, the LT20 can survive a drop of up to 3 feet on concrete. The LT20 is used in a wide variety of interior applications including wall layout, acoustic ceiling installation, drywall track installation, cabinet installation, finish carpentry and vertical plumb and alignment. The laser beam uses a wide fan angle for maximum coverage. The laser includes a versatile accessory that allows for mounting on tripods, columns studs or poles. The mount has vertical height adjustment and horizontal rotation capability for maximum range and quick setups.