Recorders wherein one of the recording elements is responsive, concurrently to two or more functions, such as amperes and volts or kva, or kw. or fuel consumption and quantity of steam produced, or two pressures.
SEE OR SEARCH THIS CLASS, SUBCLASS:
3+, for recording plural functions of steam and gas engines.
45+, for making records of two or more functions, which records may be distinguished from each other, particularly subclasses 62+, where a single marker and single record receiver are involved.
