Principal facts of the earth's magnetism and methods of determining the true meridian and the magnetic declination. Reprinted from the United States magnetic declination tables and isogonic charts for 1902 (1909)
U.S. Coast and Geodetic Survey · Washington Govt. Print. Off · leaf 82
Fig. 24.—Lines of equal magnetic declination in the polar regions for iSS; (Neumayer). … > ^ < rr 5 01 ■-I T o W ir h m Cl OJ o I-. l- r— < z T- 1 C) uo -rt .^ 1- UJ y n ^ < - _J -) o ■1^ Hi a< II <) oj UJ .-
Magnetism, Terrestrial
Internet Archive · Gerstein Library, University of Toronto · Public Domain Mark 1.0. Free to use for anything.
