Date | ca. 1710 |
Maker | Khalīl Muḥammad ibn Ḥasan ‘Alī |
Place | Iṣfahān |
Material | Brass |
Inventory no. | 33739 |
Acquisition | Presented by J. A. Billmeir in 1957 |
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 4 | Linear | Rule, left arm |