Zettlex Midi Ultra IncOders are non-contact devices for precise angle measurement, with up to 19 arc-seconds of accuracy. They use an inductive technique, similar to that used by electrical transformers.IncOders are well suited to harsh environments-where potentiometers, optical or capacitive devices might be unreliable. IncOders have two main parts each shaped like a flat ring: a Stator and a Rotor. The Stator is powered and measures the angular position of the passive Rotor. A big bore and low axial height allows easy integration with through-shafts, slip-rings, direct drivemotors, optical-fibres, pipes or cables.