Air Ministry Pamphlet 158. P/b, 14 x 21cm, 1st edition, June 1943, 17pp. Provides information, hints and tips on vision in flight. Illustrated with drawings and photographs. Covers general information on the eyes and vision and has tips on dark adaption, maintaining dark adaption, the importance of clean perspex, warmth etc. Light wear and use but generally very good. An interesting booklet. Stock code P27183-41.