(under subclass 52) Circuit-controllers are arranged to cooperate with the pointer of an indicating instrument or there is a common operator for the pointer and the circuit-controller.
SEE OR SEARCH CLASS
73, Measuring and Testing, for most measuring instruments (see the Notes to that class for other measuring instrument
classes) and for the combination of a Class 73 measuring instrument and a circuit controller wherein the circuit controller is claimed broadly (Class 200
56, provides for the combination when specific structure of the circuit controller is claimed).
