Rule, Regula, Pointer and Alidade Images
Alidade Image:
Alidade Image:
Rule Image:
Rule Image:
| Date | ca. 1260 |
| Place | Spain (?) |
| Material | Brass |
| Inventory no. | 43504 |
| Acquisition | Presented by Lewis Evans in 1924 |
Pointer
| Appearance | Tip | Sights | Pinholes | Notches | Description |
|---|---|---|---|---|---|
| Single-ended, counter-changed, original. | Simple | None | None | None |
Alidade
| Appearance | Tip | Sights | Pinholes | Notches | Description |
|---|---|---|---|---|---|
| Double-ended, counter-changed, original. | Simple | Rigid | Double | None | One of the two sighting vanes has broken off. |