968 / | HD | HOROLOGY |
748 | DD | MEASURING, COUNTING, CALIBRATING, TESTING, OR REGULATING APPARATUS (measuring devices and calibers in general G01B; counters in general H03K) [G04D 7/00] {11} |
761 | DD | .~ For balance wheels [G04D 7/08] {2} |
762 | .~.~ For adjusting the felloe or the shafts (adjustment of the gear wheels subclass 759) [G04D 7/08B] |