The mariners' handbook; a convenient reference book for navigators, yachtsmen, and seamen of all classes (1906)
International Correspondence Schools, Roden, Ernest Konrad, 1866-, International Correspondence Schools. Pocketbook · Scranton, Pa. : International Textbook Co. · leaf 109
ed to the west, as in Fig. 4, place a magneton the athwartship line with its blue pole forwards and at adistance from the. compass sufficient to correct the error.The compass north being deflected to the east, the compen-sating magnet is reversed. A similar operation is then per-formed, if… … Compen^aiion of B, Fig. 4 intersecting at a point vertically below the center of thecompass to be compensated. The magnets are then placedperpendicularly with their centers on these lines, as shownin Figs. 3 and 4. At present, however, and particularly in iron ships, com-pensating magnets are…
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