Date | ca. 1700 |
Maker | Khalīl Muḥammad ibn Ḥasan ‘Alī |
Place | Iṣfahān |
Material | Brass |
Inventory no. | 42649 |
Acquisition | Purchased from C. E. Ross in 1925 |
Alidade
Appearance | Tip | Sights | Pinholes | Notches | Description |
---|---|---|---|---|---|
Double-ended, original. | Simple | Rigid | Double | None |
Scales
Type | Range & Units | Numbered | Geometry | Location |
---|---|---|---|---|
Degree | 0 - 60 1/60 of quadrant radius | Every 5 | Linear | Rule, right arm |