Astrolabe Catalogue

 

Date ca. 1400
Place Paris (?)
Material Brass
Inventory no. 41468
Acquisition Presented by Lewis Evans in 1924
There are 4 plates with latitudes ranging from 41°0' to 52°0' .

Latitude 41°0'

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There are a number of construction lines/arcs on this tympan. In particular, the azimuth for 0° continues to the edge of the tympan; a number of the other azimuths extend slightly below the horizon. There is a faint row of construction dots beteween the equator and the tropic of cancer.. Inscribed:
Transcription Translation Notes Type
L' 41 Latitude
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Latitude 48°0'

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There are a few vestiges of the construction: two guide lines for the latitude. This plate is however nicest made.. Inscribed:
Transcription Translation Notes Type
L' 48 49 Latitude
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Latitude 45°0'

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This one is not as nicely made. Again, construction marks, some of the hour lines are poorly engraved, as Is the tropic of cancer. Line of construction dots below equator.. Inscribed:
Transcription Translation Notes Type
L' 45 Latitude
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Latitude N/A

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poorly engraved-src=+hree different meridians are scratched on the surface. This error might have been why the maker didn’t complete this side. More information

Latitude 50°0'

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Again, construction marks, poorly engraved east-west line and a number of almacantars are poorly engraved. One of the azimuths was incorrectly placed and then re-engraved in the correct location. Construction dots below equator.. Inscribed:
Transcription Translation Notes Type
L' 50 Latitude
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Latitude 51°0'

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This plate shows a bit of tarnishing, perhaps indicating that it was on the outside. The othersare all remarkable for their lack of apparent wear/weathering. Construction marks, including line of dots between equator and tropic of capricorn. Once again, the 0° azimuth extends below the horizon down to the lower edge of the tympan. Inscribed:
Transcription Translation Notes Type
L' 51 Latitude
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Latitude 52°0'

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Three are various construction marks on this plate, including azimuths that extend below the horizon and the line of construction dots between the equator and tropic of capricorn. Hour-line 5 is incompletely marked with just the I portion of the 5.. Inscribed:
Transcription Translation Notes Type
L' 52 Latitude
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Latitude 43°0'

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Various construction marks, including line of dots just above tropic of capricorn. The 0° azimuth extends below horizon to the lower edges of the tympan. Hour-line 5 is incompletely labeled with only the I portion of the 5.. Inscribed:
Transcription Translation Notes Type
L' 43 None
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