line laser : 1,Electronic self-leveling, 2,wide leveling range, 3,high precision and stability 4.Able to be connected with Specifications:Laser wavelength: 635 nmLaser class: Class IIAccuracy: ±1/4"/100 ft. (±1 mm/5m)Self-leveling range: ±3°Power: 3x AA alkaline batterySize: 10" x23 5/16" x 2 13/16"(Ø80x188mm)Weight: 2.2 lbs. (1 kg)Features and FunctionsProject one vertical line, two horizontal ...