Astrolabe Catalogue

 

Front of astrolabe without rete or plates. Click to enlarge
Date 1678 (A.H. 1089)
Place Turkey
Material Brass
Inventory no. 43559
Acquisition Presented by Lewis Evans in 1924

Throne

The throne is of the simple type . The throne is attached with a integrated base. The throne is undecorated except for the date, which is engraved on the front..

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 two pieces, soldered construction. The notch that accepts the tab from the tympans is located at the throne.. Scales on the limb:
Type Range & Units Numbered Geometry Location
Degree 0 - 360 Degrees of arc Every 10 degrees Circular, concentric None

Womb


The womb is blank. Considerable amounts of solder can be seen around the base of the limb and in the lower left quadrant, where it was used to repair the instrument..
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