Astrolabe Catalogue

 

Image of the tympan or plate - click for larger version
Tympan 4b
This is a composite plate for 32° and 25°.

Almucantars

Divisions Labelled Style
Divided every 2° from 0° to 90° Labelled every 2° 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.

Inscriptions

Transcription Translation Type
عرض لب Latitude 32° Latitude
عرض كه Latitude 25° Latitude
ساعسته يج كا Hours 13h 21m Hours of daylight
ساعسته يج د Hours 13h 04m Hours of daylight
المشرق East Direction
المغرب West Direction
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