Whistle: Difference between revisions

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'''3-2-235
'''urn:mrn:iala:dic:3-2-0235'''


Fog signal apparatus comprising a resonator having an orifice of suitable shape such that when a jet of air is passed through the orifice the turbulence produces a sound.
fog signal equipment producing a sharp sound by releasing compressed air or steam across an opening.  


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Latest revision as of 10:16, 17 September 2026

urn:mrn:iala:dic:3-2-0235

fog signal equipment producing a sharp sound by releasing compressed air or steam across an opening.




Please note that this is the term as it stands in the original IALA Dictionary edition (1970-1989)