Astrolabe Catalogue

 

Front of astrolabe without rete or plates. Click to enlarge
Date early 18th century
Maker ’Abd al-’Alī
Place Persia
Material Brass
Inventory no. 37940
Acquisition Presented by J. A. Billmeir in 1957

Throne

The throne is of the indo-persian, engraved type . The throne is attached with a integrated base. The front bears an embossed quotation from the Qur'an. The back bears an ornate foliate design.. Markings:
Content Translation Notes Type
وسع كرسيه السماوات والأرض His throne extends over the heavens and the earth. Qur'anic verse


Ring

The ring is of the ornate type (i.e. ornate ring, not simple). Although just a simple ring, the outer rim has been ornately engraved/shaped.

Shackle

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

Mater

The mater and limb are of one-piece construction. The limb lacks any tab or notch used hold the tympans in place.. Scales on the limb:
Type Range & Units Numbered Geometry Location
Degree N/A   Circular, concentric None

Womb


Engraved to resemble a gazeteer. The engraved numbers and words (?) are not cities and their geographic data..
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