Astrolabe Catalogue

 

Front of astrolabe without rete or plates. Click to enlarge
Date 15th or 16th century
Place Persia
Material Brass
Inventory no. 41261
Acquisition Presented by Lewis Evans in 1924

Throne

The throne is of the indo-persian type . The throne is attached with a integrated base. Undecorated except for a vertical line down the center..

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 eye-bolt type (i.e. any shackle that attactes to the ring via an eye-bolt type feature). Open trefoil design..

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
Degree 0 - 360 Degrees of arc Every 5 degrees Circular, concentric None

Womb


Contains seven concentric circles..
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