| 968 / | HD | HOROLOGY |
| 651 | DD | GRIPPING, HOLDING OR SUPPORTING DEVICES (stands in general F16M; for instruments G01D 11/30, B01L) [G04D 1/00] {10} |
| 673 | DD | .~ Tools for setting springs [G04D 1/04] {2} |
| 675 | DD | .~.~ For coil springs in regulating mechanisms (machines therefor subclass 701) [G04D 1/04C] {2} |
| 676 | | .~.~.~ For working the ends (machines therefor subclass 701) [G04D 1/04C2] |