The 4x360° laser level provides 4x360° all-around leveling coverage with an accuracy of ±1/10 in at 8ft and a maximum working distance of up to 100 feet. 【Self-Leveling & Manual Mode】 ①Self Leveling Mode:If tilt angle≤4°, the self leveling laser level will automatically levels, otherwise it will continuously beep with sound alarm and laser will keep flashing.
eBay