Astrolabe Catalogue

 

Image of the tympan or plate - click for larger version
Tympan 2b
Latitude 40°0'
The tab, which is soldered on, survives on this tympan.

Almucantars

Divisions Labelled Style
Divided every 1° from 0° to 90° Labelled every 1° with   (Abdjad) numerals Plain line.

Azimuths

Divisions Labelled Style
Divided every 5°  Labelled every 5° with   (Abdjad) numerals Plain line.

Circles

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

Lines

Type Labelled Description
Meridian line
Horizon rectus
Unequal hours Numbered (Numbers in Numbers, engraved script) (Abdjad), Plain line style.

Inscriptions

Transcription Translation Type
عرض م Latitude 40°. Latitude
ساعاته يد نب Hours 14h52m Hours of daylight
المشرق East Direction
المغرب West Direction
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