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CSTBerger 57 AL500H Electronic Self Leveling Rotary Laser The CST Berger 57 - AL500H is an Electronic Self - Leveling Rotary Laser. The AL - 500H is electronic self - leveling (±5°) and provides accuracy of up to 1 8 - Inch at 100 - ft (3. 2mm - Home/Family - Home Improvement 487653585 CSTBerger 57 AL500H Electronic Self Leveling Rotary Laser at 30m) w a working range of 1 000 - ft (305m) when used w the LD - 90 Rotary Laser Detector. Simple 1 button operation makes this 600RPM rotary laser to set - up and use. The durable design of the AL - 500H features a heavy - duty protective cage for the laser beacon and co - molded water resistant rubber housing (IP54). The AL - 500H is powered by 6 “AA” Alkaline batteries. |