Rule, Regula, Pointer and Alidade Images
Alidade Image:
| Date | 18th century (?) |
| Place | Persia |
| Material | Brass |
| Inventory no. | 49300 |
| Acquisition | Presented by Lewis Evans in 1924 |
Alidade
| Appearance | Tip | Sights | Pinholes | Notches | Description |
|---|---|---|---|---|---|
| Double-ended, original. | Simple | Rigid | Single | None | The alidade might, in fact, be a replacement. |