G PHYSICS
G01 MEASURING; TESTING
G01D MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
2205/00 Indexing scheme relating to details of means for transferring or converting the output of a sensing member
G01D2205/90 Two-dimensional encoders, i.e. having one or two codes extending in two directions