Astrolabe Catalogue

 

Front of astrolabe without rete or plates. Click to enlarge
Date ca. 1590
Maker Johann Anton Linden (?)
Place Heilbronn (?)
Material Gilt brass
Inventory no. 48380
Acquisition Presented by Lewis Evans in 1924

Throne

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

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 rotating pin type (i.e. pin with a 'ball-joint' on the end). Attached to U-shaped bracket that joins the pin to the throne..

Mater

The mater and limb are of one-piece construction. The notch that accepts the tab to keep the tympan from rotating 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 outer
Degree 0 - 90 Degrees of arc Every 10 degrees Circular, concentric outer2

Womb


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