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• THE SECOND WORLD WAR 1939 - 1945: GREAT BRITAIN: PERSONALITIES

  part of "MINISTRY OF INFORMATION SECOND WORLD WAR OFFICIAL COLLECTION" (photographs) Made by: Ministry of Information official photographer

  Air Chief Marshal Sir Hugh C T Dowding, Commander in Chief of Royal Air Force Fighter Command during the Battle of Britain.

• A MERLIN IS MADE: THE PRODUCTION OF MERLIN ENGINES AT A ROLLS ROYCE FACTORY, 1942

  part of "MINISTRY OF INFORMATION SECOND WORLD WAR OFFICIAL COLLECTION" (photographs) Made by: Ministry of Information Photo Division Photographer

  Non-ferrous metal ingots, the raw materials for the Merlin engines which will be produced here, come into the factory on a roller track or conveyor belt and are transferred into separate 'stalls' by these female workers. According to the original...

• A MERLIN IS MADE: THE PRODUCTION OF MERLIN ENGINES AT A ROLLS ROYCE FACTORY, 1942

  part of "MINISTRY OF INFORMATION SECOND WORLD WAR OFFICIAL COLLECTION" (photographs) Made by: Ministry of Information Photo Division Photographer

  A female worker carries out Izod impact testing in the material and mechanical test department of this factory, looking at the point at which bar material fractures. This test involves striking the material with a weighted pendulum, clearly visible in...

• A MERLIN IS MADE: THE PRODUCTION OF MERLIN ENGINES AT A ROLLS ROYCE FACTORY, 1942

  part of "MINISTRY OF INFORMATION SECOND WORLD WAR OFFICIAL COLLECTION" (photographs) Made by: Ministry of Information Photo Division Photographer

  Scientists at work in the laboratory at this aircraft engine factory. Chemical analysis is used to confirm materials testing and investigations are also carried out into electro-plating, pickling, etching and the development of oils and coolants. In...

• A MERLIN IS MADE: THE PRODUCTION OF MERLIN ENGINES AT A ROLLS ROYCE FACTORY, 1942

  part of "MINISTRY OF INFORMATION SECOND WORLD WAR OFFICIAL COLLECTION" (photographs) Made by: Ministry of Information Photo Division Photographer

  Engine components are heat treated at this aircraft engine factory, somewhere in Britain. This process is known as 'oil-blacking' and the engine components are taken from the furnace at 500 degrees C and then plunged into oil. The oil burns into the...

• A MERLIN IS MADE: THE PRODUCTION OF MERLIN ENGINES AT A ROLLS ROYCE FACTORY, 1942

  part of "MINISTRY OF INFORMATION SECOND WORLD WAR OFFICIAL COLLECTION" (photographs) Made by: Ministry of Information Photo Division Photographer

  Two workers at this aircraft engine factory work together to test the temperature of molten metal before it is put into a mould. The metal has to be 720 degrees C before it can be moulded. Mr A Hamid inserts the thermocouple of the pyrometer into the...

• A MERLIN IS MADE: THE PRODUCTION OF MERLIN ENGINES AT A ROLLS ROYCE FACTORY, 1942

  part of "MINISTRY OF INFORMATION SECOND WORLD WAR OFFICIAL COLLECTION" (photographs) Made by: Ministry of Information Photo Division Photographer

  In the foundry of this aircraft engine factory, 2 cwt of molten aluminium is emptied into a cylinder head mould by workers in an operation known as the 'two-handed pour'.

• A MERLIN IS MADE: THE PRODUCTION OF MERLIN ENGINES AT A ROLLS ROYCE FACTORY, 1942

  part of "MINISTRY OF INFORMATION SECOND WORLD WAR OFFICIAL COLLECTION" (photographs) Made by: Ministry of Information Photo Division Photographer

  A wide view of the factory floor showing multi-spindle automatic machines manufacturing nuts, adaptors and unions from bar material. Each machine is overseen by a factory worker.

• A MERLIN IS MADE: THE PRODUCTION OF MERLIN ENGINES AT A ROLLS ROYCE FACTORY, 1942

  part of "MINISTRY OF INFORMATION SECOND WORLD WAR OFFICIAL COLLECTION" (photographs) Made by: Ministry of Information Photo Division Photographer

  Mary Gordon operates a No 7 Ward combination lathe, producing sealing rings for the cylinder at this aircraft engine factory, somewhere in Britain. This is precision work, as an error of 0.001" would lead to the seizing up of the entire engine. Mary...

• A MERLIN IS MADE: THE PRODUCTION OF MERLIN ENGINES AT A ROLLS ROYCE FACTORY, 1942

  part of "MINISTRY OF INFORMATION SECOND WORLD WAR OFFICIAL COLLECTION" (photographs) Made by: Ministry of Information Photo Division Photographer

  Jane Wales checks the lengths and parallels of a Camshaft Bush on a Comparator, which registers an error of 0.0001 of an inch. The inspection section of this aircraft factory is attached to the machine shop and checks all diameters, lengths and other...