Bantjes, Rod, “Document name.html,” in Eigg Mountain Settlement History, last modified, 29 March 2024 http://people.stfx.ca/rbantjes/gis/txt/Introduction.html.
Historic Declinations for Eigg Mountain (62° 9' W and 45° 42' N) (Eigg Mountain Settlement History)
1810 19.7° W
1816 20.0
1828 20.4
1834 20.5
1861 22.9
1886 23º 45’ (“twenty-three degrees, forty-five seconds:” a second is 1/60 of a degree)
1951 24º 43’
2006 19.6
2015 18° 10.08' W
For a discussion of the importance of declination see Making Claim to the Land.