The Stanley 11-3/4-Inch FatMax Xtreme Magnetic Torpedo Level features a die-cast aluminum body for long lasting durability. The solid block vial provides accuracy of 0.0005in/in. (0.5mm/m), and a 180-degree rotating vial is designed to duplicate angles. The level includes a magnified center vial for improved visibility. This 11-3/4-inch level also features pipe groove for use on rounded surfaces, and the its rare earth magnets, which are twice as strong as basic strip magnets, are designed for the ultimate in holding power. The level is backed by a lifetime accuracy warranty.