Merlin 45 aeroplane engine, made by Rolls-Royce Ltd, Crewe, c.1940. 12 cylinder arrangement with the lower dual ignition sectioned for demonstration purposes and fitted with electric motor to turn it ...

The Rolls-Royce Merlin was the pinnacle of piston engine design in the 1940s. This particular engine was used in Fairey Fulmar I, Serial No N1926, during the days of the Battle of Britain in 1940.