(under the class definition) Adjustable inductor devices in which means are provided for showing the displacement of an inductance changing element of the inductor device relative to some fixed part of the device.
SEE OR SEARCH CLASS
116, Signals and Indicators,
241+, for miscellaneous position indicators other than the electrically actuated or controlled type.
331, Oscillators,
64, for oscillators having means for indicating the position or setting of an adjustable frequency determining element of the oscillator, such as a variable inductor or capacitor.
340, Communications: Electrical, appropriate subclasses for electrically actuated or controlled signals and indicators, especially 870.31+, for telemetric systems.
