Date | 1682 (A.H. 1093) |
Maker | Qāsim ‘Alī Qā’inī |
Place | Persia |
Material | Brass |
Inventory no. | 45509 |
Acquisition | Presented by J. A. Billmeir in 1957 |
Alidade
Appearance | Tip | Sights | Pinholes | Notches | Description |
---|---|---|---|---|---|
Double-ended, original. | Gothic, simple | Rigid | Single | None | This alidade was repaired at the right sighting vane. |
Scales
Type | Range & Units | Numbered | Geometry | Location |
---|---|---|---|---|
Sine/Cosine | 0 - 60 | Every 5 | Linear | Rule, right arm |