Astrolabe Catalogue

 

Image of the tympan or plate - click for larger version
Tympan 3a
This plate bears two projections: one for 0° and one for 90°.

Almucantars

Divisions Labelled Style
Divided every 6° from 0° to 90° Labelled every 3° with   (Abdjad) numerals Plain line.

Azimuths

Divisions Labelled Style
Divided every 30°  Labelled every 10° 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 (Abdjad), Dotted line style.

Inscriptions

Transcription Translation Type
العرض تسعين Latitude ninety Latitude
لاعرض For latitude Latitude
المشرق East Direction
المغرب West Direction
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