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Maps and globes
Carte de la Manche faite par ordre du Roy pour le service de ses armées de mer.
Large engraved nautical chart of the English Channel, with the coastline of northwest France from la baie de Douarnenez (Brittany) to Dunkerque (Flanders), and the coastline of England and Wales from Stroble head to Manning Tree. By Sanson
1692
Edmund Halley's worldmap of prevailing winds and compass variations
Nova & accuratissima totius terrarum orbis tabula nautica variationum magneticarum index juxta observationes anno 1700 habitas constructa, byEdmund Halley, 1730
The compass variation was one of the possible ways to find longitude at sea!
1730
3 Charts of British Channel extending from Dover to the Isles of Scilly
3 large maps by Jefferys Thomas on canvas in morocco pull-off case: , A Chart of the British Channel, extending from Dover to the Isles of Scilly on the English Coast, and from Cape Gris-Nez to the Isle of Ouessant on the French Coast
1775
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