Magnetic Compass Deviation and Correction Orleans 165 x 113 x 10mm

165 x 113 x 10mm

Edition:18 Sept 2020

*Each piece is handmade and will vary slightly in size

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Magnetic Compass Deviation and Correction Orleans 165 x 113 x 10mmIn addition to dealing with the properties of magnets and the earths magnetism, three chapters are devoted to the magnetism of the ship, the third explaining in detail the reason for, and composition of, the nine rods. The relation of the components P, Q and R are the rods to the various co efficient are fully explained. The principle of the deflator and a discussion of the limits of accuracy are also included, together with a great deal of hitherto