1. Red Line Laser Level 2. 4V1H1D 3. Easy to use 4. Accuracy: +-1/4"/100 ft. (+-1.0 mm/5m) 5. CE, GS, ROHS 4V1H1D Red Line Laser LevelFive highly focused self-leveling laser beams provide accuracy of 3/8"-in at 100 feet. Tough on the jobsite. Resists water, dirt and dust (IP54)Use to: Plumb and Align: Walls, Doors, Frames, Stud Beams, Windows and Skylights; Level Electrical Outlets; Stud and ...