Designed to fit easily in your toolbox and handle almost any leveling need, the Empire® 30 cm True Blue® magnetic tool box level features a vari-pitch vial that reads slope or pitch in in/ft. This makes it ideal for setting up a grade or measuring a slope. The True Blue® blue-banded vials and top read window help provide easy readings and the full-length aluminum frame offers exceptional durability, making it able to withstand a 10 ft drop onto concrete and still maintain accuracy. Milwaukee® Empire® True Blue® Box Level, Magnetic Metric, Series: E81, 0.0005 in Accuracy, 12 in Length, 2-1/4 in Width, 3 Vials, Vial Positions: (1) 45 deg, (1) Level, (1) Plumb, (1) Vari-Pitch, Acrylic Vial, Aluminum