Rolls-Royce Archives
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From the Rolls-Royce experimental archive: a quarter of a million communications from Rolls-Royce, 1906 to 1960's. Documents from the Sir Henry Royce Memorial Foundation (SHRMF).
Two laboratory photomicrographs, numbers A591 and A592, at 1,000 diameters magnification.

Identifier  ExFiles\Box 67a\2\  scan0126
Date  29th March 1927
  
RR 403 (2½H) (DE 879 29-3-27) G3608
ROLLS-ROYCE LTD. LABORATORY.
PHOTOMICROGRAPH No. A591
MAGNIFICATION: 1,000 DIAMETERS.

RR 403 (2½H) (DE 879 29-3-27) G3608
ROLLS-ROYCE LTD. LABORATORY.
PHOTOMICROGRAPH No. A592
MAGNIFICATION: 1,000 DIAMETERS.
  
  


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