Rugged case design withstands rough handling on the job site. Includes magnetic wall bracket for easy, stable mounting. Self-leveling 3 point laser level allows for fast, accurate layout of reference points. Accurate to 6 mm at 30 meters (1/4 inch at 100 feet). Includes floor stand for fast, easy overhang and centerline measurements. Storage Temperature : -40 C to +70 C, With batteries: -20 C to +50 C. Relative humidity : 0 % to 90 % (0 C to 35 C) 0 % to 75 % (35 C to 40 C) 0 % to 45 % (40 C to 50 C). Altitude : Operating - 2000 m, Storage - 12000 m. General : IEC 61010-1: Pollution Degree 2. Laser : IEC 60825-1: Class 3R. Max output power :