| 968 / | HD | HOROLOGY |
| 414 | DD | TIMEPIECES USING THE POSITION OF THE SUN, MOON, OR STARS (devices for fixing the place and time by astronomical observations G01C 21/00) [G04B 49/00] {1} |
| 415 | DD | .~ Sundials (normal dials subclass 147) [G04B 49/02] {1} |
| 416 | | .~.~ Graduation or shaping of dials [G04B 49/04] |