Astrolabe Catalogue

 

Complete front of astrolabe including rete. Click to enlarge.
Date 1527
Maker Georg Hartmann
Place Nuremberg
Material Brass
Inventory no. 38642
Acquisition Lent by St John's College, Oxford, in 1924

Throne

The throne is of the three-lobed type . The throne is attached with a integrated base. The throne is a single four-pedaled flower on two five-pedaled flowers.

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 square, ornate type (i.e. ornate box type shackle, frequently topped by a rotating pin). An eye-hole pin attaches the ring to the square-shaped shackle.

Mater

The mater and limb are of two pieces, soldered construction. . Scales on the limb:
Type Range & Units Numbered Geometry Location
Equal hours 1 - 12 1/12 of daylight Every 1 hours Circular, concentric outer
Degree 0 - 90 Degrees Every 5 degrees Circular, concentric outer3
Degree 0 - 90 Degrees Every 5 degrees Circular, concentric outer2

Womb


The womb is empty.
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