The Klein Tools General Purpose Digital Angle Gauge can measure or set angles, check relative angles, or can be used as a digital level. The strong magnetic base attaches to ferromagnetic surfaces like pipes, rods, metal studs, and more. This unit can quickly convert between degrees, percent grade, mm/m, and in/ft to help with grading, tiling, shower installations, and more. Quickly convert between degrees, percent grade, mm/m, and in/ft for applications such as framing, landscaping, finding slopes, and more Digital gauge measures or sets angles, checks relative angles with zero calibration feature, or can be used as a digital level High visibility reverse contrast display improves visibility in dimly lit work environments Strong magnetic base to attaches to conduit, pipes, saw blades, vents, ducts, and other ferromagnetic surfaces V-groove edges enable optimal alignment on conduits and pipes for bending and alignment Display auto-rotates when upside-down for easy viewing Water and dust resistant with rating of IP42