True Blue I-Beam level offers superior performance in all key areas of user needs and functionality. Exclusive high contrast vial surrounds make viewing easier in all light conditions. High impact acrylic e-Band vials for durability. Vialsalso include patented blue-bands to maximize bubble meniscus visibility and are accurate to within .0005 In. (inch) perinch in all working positions. All metal frame construction guarantees long-life accuracy and is equipped with impact-resistant end caps to withstand harsh job site conditions. Features top-read window for clear overhead viewing and built-in molded grip zones for enhanced portability.