The Camouflet Set, Light was designed by Major (later Major General) Jefferis just before the war when he was with MIR(c) (later MD1[Winston Churchill's Toyshop]). So it is part of a famous family of engineers stores which culminated in the "Great Eastern" an example of which is in the Canadian War Museum.
Presumably he devised the 'Light' pattern for the use of officers!
Extract from RAF manual:




Presumably he devised the 'Light' pattern for the use of officers!
Extract from RAF manual:




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