Throne
The throne is of the simple type
. The throne is attached with a integrated base. The
throne is
pierced by two small holes on each side of the
shackle.
The front is integrated with the
limb; the
back with
the back
plate.
Ring
The ring is of the simple, squared cross-section
type (i.e. a simple 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, riveted
construction. . Scales on the limb:
Range & Units |
Numbered |
Geometry |
Location |
Degree |
0 - 360 Degrees of arc |
Every 5 degrees |
Circular, concentric |
outer |
Womb
Contains a universal projection with an set of
almucantars
for 90°.
Universal
Universal with Azarquiel/Saphea/Gemma
Frisius projection. Onto the base Azarquiel projection has
been imposed a set of almucantars, spaced 5° apart and
engraved as if for a 90° projection. The universal contains
the following:
|
Angle of inclination |
Direction of inclination |
Labelled |
Language |
Script |
Line style |
Notes |
None |
N/A |
|
None |
|
|
None |
|
The universal contains the following meridians:
Interval |
Style of line |
Number style |
Description |
5° |
Plain |
Arabic Abdjad, maghrib |
Numbered along the central parallel |
The universal contains the following parallels:
Range |
Interval |
Style of line |
Number style |
Description |
|
5° |
Plain |
Arabic Abdjad, maghrib |
Numbered from the poles to the central
parallel |
More information
Stars
The universal contains the following stars.
Click on the star name or modern star name to search for
other astrolabes with the same star.
Star name
(on instrument) |
Modern star
(if known) |
Mediation |
Declination |
Pointer |