USA: Showing magnetic declination in 1700 & 1750. Isogonic lines. USCGS 1889 map

---

' Coast & Geodetic survey Thorn, Superintendent May 1888'. 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 survey map chart.

---

Size: 3855px × 2874px
Location: USA
Photo credit: © Antiqua Print Gallery / Alamy / Afripics
License: Royalty Free
Model Released: No

Keywords: 1700, 1750, 1888, 1889, 19th, antique, century, chart, coast, declination, geodetic, government, isogonic, lines, magnetic, map, nineteenth, office, printing, report, states, superintendent, survey, thorn, united, usa, uscgs, vintage, washington