Astrolabe Catalogue

 

Image of the tympan or plate - click for larger version
Tympan 4a
Latitude 35°0'
.

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 6°  Labelled every 6° with   (Abdjad) numerals Plain line.

Circles

Type Labelled Style Notes
Equator Plain line.
Tropic of Cancer Plain line.
Tropic of Capricorn Plain line.
Equinoctial colure Dotted 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) (Abdjad), Dotted line style.

Inscriptions

Transcription Translation Type
العرض كج له The latitude 35° Latitude
ساعاته يد كز Hours 14h27m Hours of daylight
المشرق East Direction
المغرب West Direction
لمعرفت غروب السهيل For knowing the setting of the Canopus Miscellaneous
لمعرفت طلوع السهيل For knowing the rising of the Canopus Miscellaneous
MHS Home | Contact Us | ©2006 Museum of the History of Science