| 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} |
| 759 | | .~ For gearwork, e.g., optical control of gear wheels, etc. (optical control in general G01B, G01B 9/08) [G04D 7/04] |