Astrolabe Catalogue

 

Front of astrolabe without rete or plates. Click to enlarge
Date ca. 1400
Maker Jean Fusoris
Place Paris
Material Brass
Inventory no. 49636
Acquisition Presented by Lewis Evans in 1924

Throne

The throne is of the simple type . The throne is attached with a integrated base. Both sides of the throne are decorated by a single raised 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). .

Mater

The mater and limb are of two pieces, soldered construction. A later inscription is found along the edge of the instrument. Scales on the limb:
Type Range & Units Numbered Geometry Location
Equal hours 1 - 12 1/12 of daylight Every 1 hours Circular, concentric outer

The limb is inscribed:
Content Translation Notes Type
M March (?) This "M" is aligned with March on the calendar on the back of the instrument Miscellaneous
A April (?) This "A" is aligned with April on the calendar on the back of the instrument Miscellaneous
M May (?) This "M" is aligned with May on the calendar on the back of the instrument Miscellaneous
I July (?) This "I" is aligned with July on the calendar on the back of the instrument Miscellaneous
A August (?) This "A" is aligned with August on the calendar on the back of the instrument Miscellaneous

Womb


The womb shows some abrasions but is otherwise blank.
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