Fog signal port: Difference between revisions
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Alternative terms: Port, Slot | Alternative terms: Port, Slot | ||
Latest revision as of 08:54, 17 September 2026
Alternative terms: Port, Slot
In some types of compressed air fog signal apparatus e.g. siren or diaphone, an aperture, generally narrow and elongated, on both the fixed and moving parts of the modulator of the compressed air.
Please note that this is the term as it stands in the original IALA Dictionary edition (1970-1989)
