(under the class definition) Apparatus comprising means other than fixed exhibitors (e.g., signs) which determine, or give information about, a condition or characteristic of the apparatus, or permit viewing of a condition or extent of motion of the apparatus or a part thereof.
SEE OR SEARCH CLASS
73, Measuring and Testing,
861.79+, for the subcombination of a rotary motor directly connected to a registering or indicating means and see the Class Definition, References to Other Classes, above, for the reference to Class 73 for a statement of the line.
116, Signals and Indicators, appropriate subclasses, for a mechanical device for giving a signal of the nature of either an alarm or an indicator.
340, Communications: Electrical, appropriate subclasses, for an electrical signal, per se.