Astrolabe Catalogue

 

Image of the tympan or plate - click for larger version
Tympan 7b
This is a composite plate for 0°, 48° and 72°.

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 15°  Labelled every 30° 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 sunrise Numbered (Numbers in Numbers, engraved script) (Abdjad), Dotted line style.

Inscriptions

Transcription Translation Type
العرض لحو Latitude Latitude
العرض مح Latitude 48° Latitude
عرض عب Latitude 72° Latitude
المشرق East Direction
المغرب West Direction
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