Astrolabe Catalogue

 

Front of astrolabe without rete or plates. Click to enlarge
Date ca. 1370
Place England (?)
Material Brass
Inventory no. 49359
Acquisition Presented by A. E. Gunther in 1986

Throne

The throne is of the simple type . The throne is attached with a integrated base.

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). The seam has been soldered together

Shackle

Shackle of the other type (i.e. unusual or unique shackle). The shackle is designed to resemble a comet, with a fiery head and long tail.

Mater

The mater and limb are of one-piece construction. The notch that admits the tab from the plates is located at the throne. Scales on the limb:
Type Range & Units Numbered Geometry Location
Equal hours 1 - 12 Times of day Every 1 hours Circular, concentric outer2
Zodiacal signs 0 - 30 Zodiacal divisions, equal or unequal Not numbered  Circular, concentric outer

Womb


The womb has four pairs of concentric cirlces, one at each cardinal point.

Lines

Type Labelled Description
Meridian line
Horizon rectus
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