Astrolabe Catalogue

 

Image of the tympan or plate - click for larger version
Tympan 5b
Latitude 35°0'
This plate is unusual in that the almucantars are engraved in an ogival pattern.

Almucantars

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

Azimuths

Divisions Labelled Style
Divided every 5°  Labelled every 50° 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.

Inscriptions

Transcription Translation Type
لعرض له For latitude 35° Latitude
ساعاته يد كد Hours 14h 24m Hours of daylight
المشرق East Direction
المغرب West Direction
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