Elementary treatise on physics experimental and applied for the use of colleges and schools (1890)
Ganot, A. (Adolphe), 1804-1887, Atkinson, E. (Edmund) · New York : W. Wood · leaf 684
Fig. 636. 66: On Alagnetism. [697- rhiimbs of the wind, the demi-rhumbs, and the quarters. The branch endingin a small star, and called N, corresponds to the bar ab, which is underneaththe disc. The compass is placed near the stem of the vessel in the binnacle.Knowing the direction of the compass… … passing through a line d marked on the inside of the box, and parallel withthe keel of the vessel. Theprisniaiic compass is greatly used for surAeying and more especiallyfor military purposes ; it differs from the mariners compass mainly in itsdimensions, and in the Avayin which observations are…
Physics
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