Astrolabe Catalogue

 

Image of the tympan or plate - click for larger version
Tympan 2b
A composite tympan for the latitudes 35°, 72° and 90°..

Almucantars

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

Azimuths

Divisions Labelled Style
Divided every 10°  Labelled every 10° with   (Abdjad) numerals Plain line.

Circles

Type Labelled Style Notes
Tropic of Cancer Plain line.
Tropic of Capricorn Plain line.
Equinoctial colure Dotted line.

Lines

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

Inscriptions

Transcription Translation Type
لاعرض له For the latitude 35°. Latitude
العرض عب The latitude 72°. Latitude
عرض تسعين Latitude ninety. Latitude
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