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Radcliffe Tracts 111 (26)Smith, Archibald
Supplement to the Practical Rules for Determining 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
(Second Edition), and A Graphic Method of Correcting the Deviations of a Ship's Compass. London: The Hydrographic Office, Admiralty, 1855.
[1934-41]
1855