Astrolabe Catalogue

 

Front of astrolabe without rete or plates. Click to enlarge
Date ca. 1250
Place Spain (?)
Material Brass
Inventory no. 49033
Acquisition Presented by Lewis Evans in 1924

Throne

The throne is of the simple type . The throne is attached with a integrated base. Small flange on either side of pivot.

Shackle

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

Mater

The mater and limb are of two pieces, riveted construction. The notch for the tabs on the plates is at the throne. Scales on the limb:
Type Range & Units Numbered Geometry Location
Degree N/A Degrees Not numbered degrees Circular, concentric None

Womb


The womb is inscribed:
Content Translation Notes Type
LAT 24 Latitude 24° Latitude

Almucantars

Divisions Labelled Style
Divided every 5° from 0° to 90° Plain line.

Azimuths

Divisions Labelled Style
Divided every 5°  Plain line.

Circles

Type Labelled Style Notes
Equator Plain line.
Tropic of Cancer Plain line.
Tropic of Capricorn Plain line.

Lines

Type Labelled Description
Unequal hours
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