The Swanson 12 in. Aluminum Tool Box level features a multi-pitch vial that reads slope or pitch in inches per foot. This is ideal for setting up a grade or measuring a slope. It has two top-read windows to help provide easy readings, and each vial has Brightview^® surrounds for easy reading. The extruded aluminum frame provides durability. This must-have level fits in your toolbox and will handle most of your leveling needs.