Astrolabe Catalogue

 

Front of astrolabe without rete or plates. Click to enlarge
Date 1703/4 (A.H. 1115)
Maker ‘Abd al-A’imma
Place Iṣfahān
Material Brass
Inventory no. 54193
Acquisition Presented by Lewis Evans in 1924

Throne

The throne is of the indo-persian, engraved type . The throne is attached with a integrated base. The front of the throne bears an embossed inscription. The back has embossed foliage. Markings:
Content Translation Notes Type
يا صادق الوعد O Thou, true to promise Miscellaneous


Ring

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

Shackle

Shackle of the omega type (i.e. Ω-shaped shackle). The shackle itself is plain, but the tabs that attach it to the throne are decorated in six-pedaled flowers.

Mater

The mater and limb are of one-piece construction. The tab used to hold tympans in place is located 180° from the throne.. Scales on the limb:
Type Range & Units Numbered Geometry Location
Degree 0 - 360 Degrees of arc Every 5 degrees Circular, concentric None

Womb


The womb is engraved with a gazeteer.
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