Use this Magnetic General Construction Level Type 80A-2M anywhere you need to ensure a straight, level surface. The Stabila Type 80A-2M Magnetic Level uses flush-mounted magnets to hold firmly in place, even on vertical or inverted surfaces for hands-free convenience. This rugged level has a durable frame that doesn’t easily twist, dent, or come apart with heavy use. The Stabila magnetic level has three watertight vials built into its frame: One horizontal level and two vertical plumb vials, which provide accurate readings to within 1/32 of an-Inch over a 72-Inch linear distance. With this Magnetic Level, you can climb to work on an overhead I-beam, fix the magnetic level to the metal overhead, and get to work. The levels lightweight frame also prevents it from slipping when it’s held against a vertical surface. From the Manufacturer: Stabila has been making top quality measuring tools in Germany since 1889 and are world renown for their quality. This 48-Inch , Magnetic, 3 vial, 80A-2M contractor’s level has a contoured box beam frame. Solid acrylic vials with spring steel hairline indicators inside vials for accurate reading. Backed by a lifetime warranty.