Kapro 923-10-10 Cast Aluminum Toolbox Level with Plumb Site, 10-Inch For determining horizontal and vertical plane as well as incline Shockproof, solid acrylic vials-one level, one plumb, and one incline Level vial and dual-view plumb vial can be read from the side and the top Magnetic base with V-shaped groove adheres to metal surfaces Solid, cast Aluminum body for durability and corrosion resistance