This rotary laser features horizontal self-leveling for quick and easy set-up. The enclosed vial for a manual leveling in vertical mode ensures jobsite durability. The protected rotary head and the weatherproof design deliver interior and exterior jobsite durability. The digital laser detector extends interior and exterior range to 600 ft, while the standby mode allows the user to pause the laser while transitioning from horizontal to vertical. This self-leveling rotary laser is ideal for ceiling grid installation, wall and partition layout, cabinet leveling, footer and foundation leveling, excavation and deck building.