Equal hours
| Type: | Equal hours |
| Geometry: | Circular, concentric |
| Unit of measurement: | Times of day |
| (Numbering) starts at: | 1 |
| (Numbering) ends at: | 12 |
| Numbered: | every 1 |
| Repeats: | 2 times |
| Divided every: | 1 (Times of day) |
Scale located on: Tympan, Womb or Back .