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 the fracture surface of a metal component.
| Identifier | ExFiles\Box 95\3\ scan0173 | |
| Date | 20th June 1935 | |
| R.R. 403 (5H) (S4259 20-6-35) J.H., Ltd. ROLLS-ROYCE LTD. LABORATORY. PHOTOMICROGRAPH NO. A/330 MAGNIFICATION: 3 DIAMETERS. | ||