The E55 Series True Blue I-Beam Level from Empire Level offers superior performance in all key areas. Exclusive high-contrast vial surrounds make viewing easier in any light condition and feature high-impact acrylic e-Band vials for unmatched durability. Empire's e-Band vials also include patented blue-bands to maximize bubble meniscus visibility and are accurate to within 0.0005 in. per inch in all working positions. The all-metal I-Beam frame construction guarantees long-life accuracy and is equipped with impact-resistant end caps to withstand the harshest job site conditions. For added utility, the E55 Series features a top-read window for clear overhead viewing and has built-in, molded grip zones for enhanced portability. Magnetic models also include a high-strength, continuous magnetic edge, which provides you with maximum holding power when measuring door frames, steel studs, ferrous pipe and other common metal-working applications. Material: Aluminum.