Brocked is a slang term, reportedly originating from the Royal New Zealand Airforce, that refers to the act of another aircrew member secretly and sneakily taking away ones allocated flying time or duty.
Optigraph
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A telescope with a diagonal eyepiece, suspended vertically ingimbals by the object end beneath a fixed diagonal plane mirror. Itis used for delineating landscapes, by means of a pencil at the eyeend which leaves the delineation on paper.
Optigraph meaning & definition 1 of Optigraph.
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