July 25: Various appliances, old and new, by means of which ship is navigated from port to port, including mariner's compass, chronometer, pelorus, parallel rulers, protractors, station pointer, range finder, and sextant. (See also - nos. 4054 Aug. 1, 1930, pp. 978-988, nos. 4055 Aug. 8,1930, pp. 999-1001)
Aids to navigation
Roy. Soc. Arts -- Jl
Royal Society of Arts -- Journal ; 78 , n 4053
1930
11 pages
Article (Journal)
English
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