Applied minor tactics (including map problems and the war game) map reading and map sketching (1912)
Moss, James Alfred, 1872- [from old catalog] · Washington, D.C. [National capital press, inc.] sales agents, The U. S. Infantry association; [etc., etc.] · leaf 34
o not usually have the same positions, because at all points of the earthssurface the true meridian is the straight line joining the observers posi-tion and the North Pole of the earth, whereas the direction of the mag-netic needle varies at different points of the earth, at some places… … Figure 16. It is important to know this relation because maps usually show theTrue Meridian and an observer is generally supplied with a magneticcompass. Figure 16 shows the usual type of Box Compass. It has 4cardinal points, N, E, S and W marked, as well as a circle graduated indegrees from zero…
Maps, Military · Tactics · War games
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