Exceptionally designed, the Milwaukee Box Level provides industry-leading performance with best-in-class vial readability, frame durability, and magnet strength. The innovative All-Metal Backbone provides the strongest, most durable frame, ensuring long-life accuracy, while the revolutionary Sharp site vial technology provides superior visibility with a magnified bubble and high visibility vial spirit. For added ease-of-use, it's outfitted with rare amplified Earth magnets to maximize holding power.