Rule, Regula, Pointer and Alidade Images
Alidade Image:
| Date | 1068 (A.H. 460) |
| Maker | Ibrahīm ibn Sa'īd as-Sahlī |
| Place | Toledo |
| Material | Brass |
| Inventory no. | 55331 |
| Acquisition | Presented by Lewis Evans in 1924 |
Alidade
| Appearance | Tip | Sights | Pinholes | Notches | Description |
|---|---|---|---|---|---|
| Double-ended, counter-changed, original. | Simple | Rigid | Double | None | One of the sighting vanes is currently loose.. |