Bosch Exterior Self-Leveling Rotary Laser Kit with Receiver, Tri-Pod, Grade Rod, and Hard Case GRL400HCK ACCURACY: Bosch-patented dual-laser system with horizontal lasers for use together or individually for both indoor and outdoor applications. Long working range of 1,300 ft. with accuracy up to 3/32 at 100 feet. SELF-LEVELING: Includes Smart Pendulum System that allows laser tool to self-level while also indicating out-of-level condition to help ensure an accurate measuring. Manual mode locks laser lines at any angle. CONVENIENT: Featuring the Bosch-patented motorized microfine plumb alignment -allows left/right beam adjustment without having to relocate the unit. DURABLE: The Bosch GRL400HCK is IP56 certified and provides a robust design with a glass enclosed cage for upgraded protection ensures years of dependable operation. Includes two large, easy-to-grip carrying handles. VERSATILE Provides laser beam customization up to 6-lengths and 3 rotation speeds including 350, 600, and 1200 RPM settings for application and lighting conditions.