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 material sample at 100 diameters magnification.
| Identifier | ExFiles\Box 120\1\ scan0336 | |
| Date | 1st October 1935 | |
| R.R. 403 (10m) (92117-1-10-35) J.H., Ltd. ROLLS-ROYCE LTD. LABORATORY. PHOTOMICROGRAPH No. A1386 MAGNIFICATION: 100 DIAMETERS. Spec. No. 118. Lake & Elliot Special M1126 | ||