Astrolabe Catalogue

 

Date 1221/2 (A.H. 618)
Maker Muḥammad ibn Abī Bakr
Place Iṣfahān
Material Brass
Inventory no. 48213
Acquisition Presented by Lewis Evans in 1924
There are 2 plates with latitudes ranging from 30°0' to 40°0' .

Latitude 30°0'

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Inscribed:
Transcription Translation Notes Type
عرض ل Latitude 30° Latitude
ساعاته يه يد Hours 15h14m This number is clearly too long. A more typical lenghth of day at 30° is 13h57m.. Hours of daylight
المشرق East Direction
المغرب West Direction
More information

Latitude 40°0'

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Inscribed:
Transcription Translation Notes Type
عرض م Latitude 40° Latitude
ساعاته يد م Hours 14h40m Hours of daylight
المشرق East Direction
المغرب West Direction
More information

Latitude 32°0'

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Inscribed:
Transcription Translation Notes Type
عرض لب Latitude 32° Latitude
ساعاته يد ح Hours 14h08m Hours of daylight
المشرق East Direction
المغرب West Direction
More information

Latitude 36°0'

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Inscribed:
Transcription Translation Notes Type
عرض لو Latitude 36° Latitude
ساعاته يد كه Hours 14h25m Hours of daylight
المشرق East Direction
المغرب West Direction
More information
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