Astrolabe Catalogue

 

Front of astrolabe without rete or plates. Click to enlarge
Date 1551
Maker Anthoine Mestrel
Place Paris
Material Brass
Inventory no. 32378
Acquisition Presented by J. A. Billmeir in 1957

Throne

The throne is of the engraved type with s-shaped scroll work support(s). The throne is attached with a integrated base. Both the front and the back are decorated with an ornate and vaguely demonic engraved head.

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 disc type (i.e. usually a disc that fits over the throne and pivots on a pin). The pivoting disc is decorated as a flower and attaches to the top of the throne. From the top of the disc extends a small rotating pin through which the ring passes.

Mater

The mater and limb are of two pieces, riveted construction. . 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 Every 5 degrees Circular, concentric outer2

Womb


The womb is blank.
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