Astrolabe Catalogue


Date ca. 1700
Maker Khalīl Muḥammad ibn Ḥasan ‘Alī
Place Iṣfahān
Material Brass
Inventory no. 42649
Acquisition Purchased from C. E. Ross in 1925

Rule, Regula, Pointer and Alidade Images

Alidade Image:

astrolabe part (photo)


Appearance Tip Sights Pinholes Notches Description
Double-ended,  original.  Simple Rigid Double None


Type Range & Units Numbered Geometry Location
Degree 0 - 60 1/60 of quadrant radius Every 5  Linear Rule, right arm
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