Astrolabe Catalogue

 

Front of astrolabe without rete or plates. Click to enlarge
Date 1595
Place Paris (?)
Material Brass
Inventory no. 45975
Acquisition Presented by Lewis Evans in 1924

Throne

The throne is of the simple type . The throne is attached with a integrated base. Although undecorated, this throne is rather high and ornately shaped. This throne composed in two pieces: the front piece is rivited to the extension of the back plate..

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). Joint is not soldered together.

Shackle

Shackle of the disc type (i.e. usually a disc that fits over the throne and pivots on a pin). This shackle is a lightly decorated disc that attaches to the throne by a pin. The ring passes through a eye-hole at the top..

Mater

The mater and limb are of two pieces, riveted construction. . Scales on the limb:
Type Range & Units Numbered Geometry Location
Altitude 0 - 90 Degrees of arc Every 10 degrees Circular, concentric None
Equal hours 1 - 12 Times of day Every 1 hours Circular, concentric outer

Womb


Other than the perpindicular lines, the womb is blank..

Lines

Type Labelled Description
Meridian line
Horizon rectus
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