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Vintage Amateur and Military Radio Amateur/military receivers and transmitters, morse, and any other related vintage comms equipment. |
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3rd May 2011, 8:40 am | #1 |
Octode
Join Date: Aug 2006
Location: Rye, East Sussex, UK.
Posts: 1,647
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'Green spot' military spec
Does anyone know the origin of the term 'Green spot' when applied to military equipment?
I am well acquainted with 'Green spot' target ammunition (highest consistency of quality control and accuracy in batch testing), but is this the same criterion for 'green spot' valves? ... and why 'Green spot' - why not 'sky blue pink' spot? Barry |