Air Ministry Pamphlet 153, 'Propeller Sense'. P/b, 18.5 x 24cm, 12pp. Prepared in the Ministry of Aircraft Production and issued by the Air Ministry, Department of the Air Member for Training. 1st edition, June 1943. Written to give an insight into the working of the constant-speed variable-pitch propeller. Illustrated with diagrams and cartoon drawings. The cover is a little soiled but in good used overall condition. Stock code P27412.