The aviation pocket-book for 1918; a compendium of modern practice and a collection of useful notes, formulae, rules, tables and data relating to aeronautics (1918)
Matthews, Richard Borlase, 1878- · London : C. Lockwood and son · leaf 358
ly E. or)\. under the lubber line, place, on either side of the compa.s.s, asecond magnet at right angles to the first one, with its centre ona perpendicular fr(jm the centre of the compass, and its X. pob^on that side towards which the X. pole of the compass card]ioints. Move this magnet… … C D ^mnd Smsll permsnent naqnfl toTorrtcf semidrtukr devisf/on£ Vertlal bar of soft iron to correctsemicircular deviation Etc. \\ These two adjustmenxs are sufficient 10 correct ariv error due toi^ermanent maguetisaiion of vertical iron or steel pf^rtions of theaeroplane. The next thing is to…
Aeronautics
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