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).
Photomicrograph showing the microstructure of a material at 300x magnification.

Identifier  ExFiles\Box 30\6\  Scan072
Date  29th November 1928
  
RR 403 (2½H) (DF 568 29-11-28) BM, 2/5733.
ROLLS-ROYCE LTD. LABORATORY.
PHOTOMICROGRAPH No. A613.
MAGNIFICATION : 300 DIAMETERS.
  
  


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