... .Two beam laser level 2. Easy to use, one people can handle it. 3. Accuracy: +3/8"/100ft. Two ... Walls, Doors, Frames, Stud Beams, Windows and Skylights; Level Electrical Outlets; Stud and Curtain Wall Plumbing, HVAC, ... , Doors, Frames, Stud Beams, Windows and Skylights; Level Electrical Outlets; Stud and Curtain Wall Plumbing, HVAC, ... : Other Models picture for reference: Two Beam Laser Level-1V1H Laser ...