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Definition of Isogonic line
1. Noun. An imaginary line connecting points on the Earth's surface where the magnetic declination is the same.
Definition of Isogonic line
1. Noun. (cartography navigation) A line on a chart or map showing points of constant magnetic declination. ¹
¹ Source: wiktionary.com
Lexicographical Neighbors of Isogonic Line
Literary usage of Isogonic line
Below you will find example usage of this term as found in modern and/or classical literature:
1. The Theory and Practice of Surveying: Designed for the Use of Surveyors and by John Butler Johnson (1904)
"The isogonic line joining points having no declination is called the agonic line.
There is such a line crossing the United States passing just east of ..."
2. Physics: Advanced Course by George Frederick Barker (1892)
"292, Frontispiece) the isogonic line of -|- 7° (west declination) enters the
United States near ... The isogonic line of — 7° enters the United States near ..."
3. Science by American Association for the Advancement of Science (1888)
"Just where this great break in the geological continuity of the country occurs,
there a large sinuosity seemed to show itself on the isogonic line. ..."
4. A Treatise on Mine-surveying by Bennett Hooper Brough, Harry Dean (1920)
"The two points, where the isogonic line is cut, are joined; the joining line is
bisected, and at the point of bisection a perpendicular is erected ; then, ..."
5. Theoretical and Practical Electrical Engineering: Comprising a Course of by Louis Denton Bliss (1922)
"A line drawn through all places connecting points of equal declination would be
called an isogonic line. ..."
6. Plane Surveying for Use in the Classroom and Field by William Galt Raymond (1914)
"A line connecting points having the same magnetic declination is called an isogonic
line, and the line joining points of no declination is an agonic line. ..."
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