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Roy Distance between the Royal Observatories of Greenwich and Paris Plate IX map of triangulation, Published 1790
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Roy Distance between the Royal Observatories of Greenwich and Paris Plate IX map of triangulation, Published 1790

Map of cross-channel triangulation to determine the distance between the Royal Observatories of Greenwich and London. Plate IX from

Date
December 31, 1790
Mapmaker / publisher
William Roy (1726-1790)
Place
Europe
Archive
Wikimedia Commons
Type
map
Original size
11,882 × 5,955 pixels

Public domainsafest

Reason: its maker died more than 70 years ago.

Read from: Commons licence category: PD-old-70-expired; no CC BY, CC BY-SA, GFDL or deletion tag on the file page.

Credit line

"Roy Distance between the Royal Observatories of Greenwich and Paris Plate IX map of triangulation, Published 1790" (December 31, 1790). William Roy (1726-1790), via Wikimedia Commons. Public domain. https://commons.wikimedia.org/wiki/File:Roy_Distance_between_the_Royal_Observatories_of_Greenwich_and_Paris_Plate_IX_map_of_triangulation,_Published_1790.png

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