| 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} |
| 754 | DD | .~ Testing apparatus for complete clockworks with regard to external influences or general good working [G04D 7/00K] {3} |
| 756 | | .~.~ With regard to the reaction to shocks [G04D 7/00K3] |