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 showing a material's microstructure at 150x magnification.
| Identifier | ExFiles\Box 94\2\ scan0214 | |
| Date | 11th August 1936 | |
| To Rm.{William Robotham - Chief Engineer} To accompany Report M.1314. R.R. 403 (10m) (21250 11-8-36). J.H., Ltd. ROLLS-ROYCE LTD. LABORATORY. PHOTOMICROGRAPH No. A1618 MAGNIFICATION: 150 DIAMETERS. | ||