Rule, Regula, Pointer and Alidade Images
Alidade Image:
| Date | 1713/4 |
| Maker | ‘Abdī |
| Place | Turkey |
| Material | Brass |
| Inventory no. | 39955 |
| Acquisition | Presented by J. A. Billmeir in 1957 |
Alidade
| Appearance | Tip | Sights | Pinholes | Notches | Description |
|---|---|---|---|---|---|
| Double-ended, original. | Simple | Rigid | Single | None | Decorated with two simple lines running from one sighting vane to the other.. |