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. | ||