Unequal hours
| Type: | Unequal hours |
| Style: | Unequal hours, double |
| Geometry: | Arc |
| Unit of measurement: | 1/12 of daylight |
| (Numbering) starts at: | 1 |
| (Numbering) ends at: | 12 |
| Numbered: | Not numbered |
| Repeats: | 1 times |
| Divided every: | 1 (1/12 of daylight) |
Scale located on: Tympan, Womb or Back .
Location(s) detail:
| Upper half: | The upper two quadrants of the back of the instrument (Upper half) |