The Klein Tools 935DAGL is a digital level that detects and measures angles. It can measure ranges from 0 to 90-Degree or 0 to 180-Degree with a display that rotates when used in vertical or horizontal orientations. A target angle with audible alarm can be set, allowing the user even greater efficiency. When laid flat, it will function as a bullseye level. Set zero reference at any angle. LCD menu screen displays in English, Spanish, or French.