Astrolabe Catalogue


Front of astrolabe without rete or plates. Click to enlarge
Date 1081/2
Maker Muḥammad ibn Sa‘īd as-Ṣabbān
Place Guadalajara
Material Brass
Inventory no. 52473
Acquisition Presented by J. A. Billmeir in 1957


The throne is of the pierced type . The throne is attached with a integrated base. A low, simple pierced throne. The throne is made of two pieces: the front is integrated with the limb, the back with the back plate..


The ring is of the simple, round cross-section type (i.e. simple plain ring made from a round rod or piece of metal).


Shackle of the omega type (i.e. Ω-shaped shackle). .


The mater and limb are of two pieces, riveted construction. . Scales on the limb:
Type Range & Units Numbered Geometry Location
Degree 0 - 360 Degrees of arc Every 5 degrees Circular, concentric None


Astrological tables..
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