Astrolabe Catalogue

 

Image of the tympan or plate - click for larger version
Tympan 4a
Latitude 37°0'
This tympan seems to have been gilded in silver, most of which has now worn off..

Almucantars

Divisions Labelled Style
Divided every 6° from 0° to 90° Labelled every 6° 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
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) (Modern), Plain line style.

Inscriptions

Transcription Translation Type
لعرض لز For latitude 37° Latitude
ساعاته يد ل Hours 14h30m Hours of daylight
المشرق East Direction
المغرب West Direction
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