Scales
| Type | Range & Units | Numbered | Geometry | Location |
|---|---|---|---|---|
| Zodiacal signs | 0 - 30 Degrees | Every 5 degrees | Circular, concentric | n/a |
| Calendar | 0 - whenever the month ends Days of year | Every 5 days | Circular, concentric | n/a |
| Shadow square | 0 - 12 1/12 of daylight | Every 2 hours | Box | n/a |
| Hour conversion | 0 - 12 Times of day | Every hour hours | Arc | n/a |