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).
Laboratory photomicrograph of a sample at 10 diameters magnification.

Identifier  ExFiles\Box 102\1\  scan0342
Date  13th April 1934
  
R.R. 403 (5H) (62316 13-4-34) J.H.,Ltd.
ROLLS-ROYCE LTD. LABORATORY.
PHOTOMICROGRAPH NO A1.237
MAGNIFICATION : 10 DIAMETERS.
  
  


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