USA: Magnetic declination annual change. Agonic lines 1797-1890. USCGS, 1889 map

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' Coast & Geodetic survey Mendenhall, Superintendent. Annual change of the Magnetic declination for the Epoch January, 1890'. Artist/engraver/cartographer: United States Coast & Geodetic Survey. Provenance: "Report of the Superintendent of the United States Coast & Geodetic Survey-1888"; Published by Government Printing Office, Washington. Type: Antique colour survey map chart; Scale 1:10,000,000.

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Size: 6374px × 4706px
Location: USA
Photo credit: © Antiqua Print Gallery / Alamy / Afripics
License: Royalty Free
Model Released: No

Keywords: 000, 1, 10, 1797, 1888, 1889, 1890, 19th, agonic, annual, antique, century, change, chart, coast, colour, declination, epoch, geodetic, government, january, lines, magnetic, map, mendenhall, nineteenth, office, printing, report, scale, states, superintendent, survey, united, usa, uscgs, vintage, washington