JOHNSON LEVEL I-Beam Level: Level & Plumb, I-Beam, Top Read Window, 78 in Overall Lg, Acrylic Barrel

Magnetic I-beam levels stick to steel, cast iron, and other ferrous metal surfaces to provide readings while keeping hands free to reposition components and materials. They are commonly used when leveling metal pipe, ducts, studs, doors, windows, and shelves. Their flanged frame makes them lighter and easier to grip than box levels, and its length allows more accurate readings across longer distances than the shorter frame of torpedo levels.