Supplement to the Practical rules for ascertaining the deviations of the compass which are caused by the ship's iron, being Instructions for the computation of a table of the deviations of a ship's compass, from observations made on 4, 8, 16, or 32 points

Supplement to the Practical rules for ascertaining the deviations of the compass which are caused by the ship's iron, being Instructions for the computation of a table of the deviations of a ship's compass, from observations made on 4, 8, 16, or 32 points - (2d ed.) - London, Printed for the Hydrographic office, Admiralty, 1855. - 39, [1] p. tables. fold. diagr. 25 cm.

09012446


Compass.
Magnetism of ships.

HF5721 / .L56 1855

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