(under subclass 213) Subject matter including a galvanometer having its rotation directly transmitted to control the shutter or the diaphragm.
(1) Note. A galvanometer is an instrument having a needle attached to a coil rotated by electrodynamic force when a current is passed through the coil.
SEE OR SEARCH THIS CLASS, SUBCLASS:
, FOR 749+, for foreign art collections involving camera automatic exposure control having direct drive galvanometer control of a diaphragm.
SEE OR SEARCH CLASS
324, Electricity: Measuring and Testing,
76.11+, for measuring electricity using a galvanometer.
