Electromagnetic horn: Difference between revisions
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Revision as of 12:00, 15 February 2009
3-2-220
Alternative terms: Electromagnetic horn (G.B.), (Electromagnetic air) Oscillator (U.S.A.)
A fog signal apparatus comprising a resonant diaphragm maintained in vibrating motion by electromagnetic action.
Please note that this is the term as it stands in the original IALA Dictionary edition (1970-1989)
