| 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} |
| 749 | | .~ Purely mechanical measuring and testing apparatus [G04D 7/00B] |