Astrolabe Catalogue


Date ca. 1700
Maker Khalīl Muḥammad ibn Ḥasan ‘Alī
Place Iṣfahān
Material Brass
Inventory no. 50987
Acquisition Presented by J. A. Billmeir in 1957

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, left arm
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