Astrolabe Catalogue

 

Image of the tympan or plate - click for larger version
Tympan 1a
Latitude 30°0'
.

Almucantars

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

Circles

Type Labelled Style Notes
Equator Plain line. Engraved only below the horizon.
Tropic of Cancer Plain line. Engraved only below the horizon.
Tropic of Capricorn Plain line. Engraved only below the horizon.

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 ل Latitude 30° Latitude
ساعاته يه يد Hours 15h14m Hours of daylight
المشرق East Direction
المغرب West Direction
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