(under subclass 305) Gauges having more than one float. These floats may operate on the same liquid, on liquids in different reservoirs or on liquids of different specific gravity in the same reservoir. One or several indicating means may be provided to indicate the level or levels of the liquid or liquids or their differences in level.
SEE OR SEARCH THIS CLASS, SUBCLASS:
861+, for multiple float gauges employed to measure differences in head on flow meters; see the volume or rate of flow meters in this class, principally subclasses 861.42-861.69 and 227.
