This magnetic programmable digital torpedo level is accurate, versatile &easy to use. Its backlit LCD provides easy viewing &automatically inverts when used overhead. The level has four units of measurement (degrees, percent, inches/feet in decimals &fractions, &millimeters/meters) &features both preprogrammed &custom modes, making it the only level you'll need for any number of uses. The powerful rare earth magnets adhere to any ferrous metal surface for easy, hands-free use, while the level's V-groove allows the frame to fit effortlessly on pipe &conduit.