Model of adjustable-pitch screw propeller
Model in brass, scale 1:12, of an adjustable-pitch screw propeller, Robert Griffiths patent, No. 92, A.D.1853 & No. 319, A.D.1858, Havre, France.
Model in brass, scale 1:12, of an adjustable-pitch screw propeller, Robert Griffiths patent, No. 92, A.D.1853 & No. 319, A.D.1858, Havre, France.