... Beams, Windows and Skylights; Level Electrical Outlets; Stud and Curtain Wall Plumbing, HVAC, Plumbing, Pipe Installation, etc.; Easily Lay Out Right ... Diagonals and Footings for Decks, Porches, and Patios; Grade Determination; Dry Wall Installation.Accessories:Cloth bag, Glasses, BatteryNormal Packing:PVC Blister