Designed to fit easily in the toolbox and handle almost any leveling need, the Empire True Blue 12 In. Magnetic Tool Box Level features a Vari-Pitch vial that reads slope or pitch in inches per foot. Ideal for setting up a grade or measuring a slope. True Blue blue-banded vials and top read window help provide easy readings, and the full-length aluminum frame offers exceptional durability. Able to withstand a 10 Ft. drop onto concrete and maintain accuracy. The Empire E2994 True Blue Laser Etched 7 In. Rafter Square features permanent laser markings for superior readability in any light condition. An increased heel width that is up to 25% wider gives increased stability while cutting deck boards. Thick anodized matte 6063 aluminum provides a safer cutting guide and will not rust or corrode.