Picture Perfect Level, Lightweight, Durable Plastic Body Won-Feet Leave Marks On Walls, Dual Vials Make Leveling Projects Fast and Easy, Also Great For Leveling Mirrors, Appliances and Cabinets, The Fast and Convenient Way To Level Objects, Place Level Securely On The Corner Of Object To Be Leveled, Adjust Object Until Bubble Is Centered Between Line In Top Vial..