Astrolabe Catalogue

 

Image of the tympan or plate - click for larger version
Tympan 3a
Latitude 21°0'
.

Almucantars

Divisions Labelled Style
Divided every 1° from 0° to 90° Labelled every 2° with   (Abdjad) numerals Plain line.

Azimuths

Divisions Labelled Style
Divided every 30°  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.
Equal hours from sunset Numbered (Numbers in Numbers, engraved script) (Abdjad), Hatched line style.

Inscriptions

Transcription Translation Type
بعرص كا م For latitude 21°40' Latitude
ساعسته يج ك Hours 13h 20m Hours of daylight
مشرق East Direction
مغرب West Direction
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