Rule, Regula, Pointer and Alidade Images
Alidade Image:
| Date | 1719/20 (A.H. 1132) |
| Maker | ‘Abd al-A’imma |
| Place | Iṣfahān |
| Material | Brass |
| Inventory no. | 46681 |
| Acquisition | Presented by J. A. Billmeir in 1957 |
Alidade
| Appearance | Tip | Sights | Pinholes | Notches | Description |
|---|---|---|---|---|---|
| Double-ended, original. | Simple | Rigid | Double | None | This alidade is plain, not having been decorated with either scales or decorative engravings.. |