Air Ministry pamphlet - Propeller Sense

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, revised March 1944.  Written to give an insight into the working of the constant-speed variable-pitch propeller.  Illustrated with diagrams and cartoon drawings.  The cover is creased and a little dog-eared.  Good used condition.  Stock code P20026.