Astrolabe Catalogue

 

Front of astrolabe without rete or plates. Click to enlarge
Date 16th century
Place Germany
Material Brass
Inventory no. 39887
Acquisition Presented by Lewis Evans in 1924

Throne

The throne is of the simple type . The throne is attached with a notched base. Front and back decorated with engraved rectangle and edges of throne traced with single line.

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 omega type (i.e. Ω-shaped shackle). Ω-shaped shackle, attached with a pin to the throne.

Mater

The mater and limb are of three pieces construction. Constructed in at least three pieces: 1) limb with 2) inner ring, both pinned (soldered?) to the 3)back plate. Scales on the limb:
Type Range & Units Numbered Geometry Location
Degree 0 - 15 Degrees of arc Every 5° degrees Circular, concentric outer2

Womb


The womb is inscribed:
Content Translation Notes Type
ELEVA POLI 48 G Elevation of the pole, 48 degrees Latitude

Circles

Type Labelled Style Notes
Tropic of Cancer Plain line.
Tropic of Capricorn Plain line.
Equator Plain line.

Lines

Type Labelled Description
Horizon obliquus ORI on the left and SON on the right (Latin in Square capitals script)
Unequal hours (Modern), Plain line style.
Horoscopic (great) houses
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