Abstract
THE old triangulation of France is considered as having been begun in 1811 by a body of military surveyors known as ‘Ingénieurs Géographes.’ The work, however, was really a continuation of that executed by Delambre and Mechain between 1792 and 1801, when the old Arc of Meridian was measured from Dunkirk to Barcelona. Under Brousseaud, Bonne, Hossard, Levret, Perrier, and other ‘Ingénieurs” of the Dep6t de la Guerre, the triangulation was carried over France and linked with the surveys of Italy, Belgium, Britain, and Germany. The origin for latitudes, longitudes, and azimuth was taken at the Pantheon, whence geodetic latitudes and longitudes were computed throughout the country from the sides and angles of the triangulation.
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References
Bulletin Gédésigue, No. 12 and No. 16, "Formules pratiques pour le calcul des coordonnées géodésiques." By Lieut.-Col. E. Benoit. (Paris: J. Hermann; 1926 and 1927).
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MCC, G. Triangulation of France1. Nature 122, 1014–1015 (1928). https://doi.org/10.1038/1221014b0
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DOI: https://doi.org/10.1038/1221014b0
