Difference between revisions of "Whistle"

Latest revision as of 17:11, 7 February 2024

3-2-235

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)

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 '''3-2-235
-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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