The Bosch GPL5 5-Point Laser is a great go-to tool for any leveling project.  The GPL5 Laser is extremely compact — so it's easy to carry on a tool belt — and it has 5 beams for level, plumb, square and grade applications.  This Laser Level is a favorite because it's easy to use and incredibly useful for indoor and outdoor jobsites. Features: Integrated reference lines for precise positioning of tool and transfer of points Easy field recalibration maintains accuracy and prevents downtime Pocket-sized (only 4 1/8 inches tall) to fit on tool belt Easy access battery compartment to minimize downtime Smart Pendulum Leveling system self-levels, senses and indicates out-of level condition, and locks when switched off Projects plumb, level, and square points for precise positioning of tool and transfer of points for easy and accurate transfer and alignment of points in level, plumb, square and grade applications Accurately transfers and aligns, level, plumb, 90-degree square and grade points Multipurpose attachment lets you position and mount with magnets, strap, or threaded mounts (1/4-20, 5/8-11) What's In The Box: Bosch GPL5 5-Point Self-Leveling Alignment Laser Multipurpose Attachment Three AA 1.5-Volt Batteries Recalibration Wrench Mounting Strap Carrying Case