Astrolabe Catalogue

 

Front of astrolabe without rete or plates. Click to enlarge
Date 1558
Maker Giovanni Domenico Feciolo
Place Bologna
Material Brass
Inventory no. 50257
Acquisition Bequeathed by Mrs A. M. Billmeir in 1973

Throne

with s-shaped scroll work support(s) made of . The throne is attached with a screwed base. Both sides of the throne are decorated with detailed engraving. Two beared faces are shown in profile at the bottom. A third face, shown from the front, decorates the center of the throne.

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). Simple rotating pin shackle attaches ring to throne..

Mater

The mater and limb are of two pieces, soldered and riveted construction. . Scales on the limb:
Type Range & Units Numbered Geometry Location
Equal hours 1 - 12 Times of day Every hour hours Circular, concentric outer
Altitude 0 - 90 Degrees of arc Every 10 degrees degrees Circular, concentric outer2

Womb



The womb contains 1 scales of the following types:
Type Range & Units Numbered Geometry Location
Windrose N/A   None None
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