Astrolabe Catalogue

 

Date early 18th century
Maker ’Abd al-’Alī
Place Persia
Material Brass
Inventory no. 37940
Acquisition Presented by J. A. Billmeir in 1957
There are 3 plates with latitudes ranging from 32°0' to 38°0' .

Latitude 34°0'

Thumbnail image of the tympan or plate - click for more information
Like all the tympans with this instrument, this one has a faulty stereographic projection. By inspection, they are all for the same latitude, regardless of what the engraved latitude might indicate.. Inscribed:
Transcription Translation Notes Type
لعرض لد For latitude 34° Latitude
ساعاته يد لو Hours 14h36m Hours of daylight
المشرق East Direction
المغرب West Direction
More information

Latitude 32°0'

Thumbnail image of the tympan or plate - click for more information
Like all the tympans with this instrument, this one has a faulty stereographic projection. By inspection, they are all for the same latitude, regardless of what the engraved latitude might indicate.. Inscribed:
Transcription Translation Notes Type
لعرض لب For latitude 32° Latitude
ساعاته يد Hours 14h Hours of daylight
المشرق East Direction
المغرب West Direction
More information

Latitude 38°0'

Thumbnail image of the tympan or plate - click for more information
Like all the tympans with this instrument, this one has a faulty stereographic projection. By inspection, they are all for the same latitude, regardless of what the engraved latitude might indicate.. Inscribed:
Transcription Translation Notes Type
لعرض يح For latitude 38° There is a second number, لز, i.e., 37, written next to the 38.. Latitude
ساعاته يد Hours 14h Hours of daylight
المشرق East Direction
المغرب West Direction
More information

Latitude 38°0'

Thumbnail image of the tympan or plate - click for more information
Like all the tympans with this instrument, this one has a faulty stereographic projection. By inspection, they are all for the same latitude, regardless of what the engraved latitude might indicate.. Inscribed:
Transcription Translation Notes Type
لعرض لح For latitude 38° Latitude
ساعاته يد لط Hours 14h39m Hours of daylight
المشرق East Direction
المغرب West Direction
More information

Latitude 34°0'

Thumbnail image of the tympan or plate - click for more information
Like all the tympans with this instrument, this one has a faulty stereographic projection. By inspection, they are all for the same latitude, regardless of what the engraved latitude might indicate.. Inscribed:
Transcription Translation Notes Type
لعرض لد For latitude 34° Latitude
ساعاته يب Hours 12h Hours of daylight
المشرق East Direction
المغرب West Direction
More information

Latitude 32°0'

Thumbnail image of the tympan or plate - click for more information
Like all the tympans with this instrument, this one has a faulty stereographic projection. By inspection, they are all for the same latitude, regardless of what the engraved latitude might indicate.. Inscribed:
Transcription Translation Notes Type
عرض لب Latitude 32° Latitude
ساعاته كو Hours 26h There is another number, مح, i.e., 48, that might be taken to the be the hours. Indeed, this inscription is quite confusing as to which number belongs to which label. In any case, they are all incorrect.. Hours of daylight
More information
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