Astrolabe Catalogue

 

Front of astrolabe without rete or plates. Click to enlarge
Date ca.1715
Maker ‘Abd al-A’imma
Place Iṣfahān
Material Brass
Inventory no. 37321
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 empty cartouche and foliate decoration. The entire back of the throne is an embossed inscription.. Markings:
Content Translation Notes Type
وسع كرسيه السماوات والأرض ولا يؤده حفظهما وهو العلي العظيم His throne extends over the heavens and the earth; it does not weary Him to preserve them both. He is the Most High, the Tremendous. Qur'anic verse


Ring

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

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

Mater

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

Womb


Contains a gazeteer.
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