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Air Ministry 'Douglas' Protractor

Code: Prot2

Air Ministry 'Douglas' Combined Protractor & Parallel Rule.  Stores reference 6B/47.  Perspex, approximately 12 x 12cm.  Marked with a grid and compass bearings around the edges.  A. Crown M. marked.   Complete with original card sleeve printed with instructions.  As used by the aircrew navigator.  Grubby but undamaged. Stock code Prot2.