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).
Three laboratory photomicrographs and one photograph showing metal cracking.
| Identifier | ExFiles\Box 152\1\ scan0215 | |
| Date | 1st October 1935 | |
| R.R. 403 (10m) (92117-1-10-35) J.H., Ltd. ROLLS-ROYCE LTD. LABORATORY. PHOTOMICROGRAPH No. A1542 MAGNIFICATION: 150 DIAMETERS. ROLLS-ROYCE LTD. LABORATORY. PHOTOMICROGRAPH No. A1541 MAGNIFICATION: 150 DIAMETERS. ROLLS-ROYCE LTD. LABORATORY. PHOTOMICROGRAPH No. A1544 MAGNIFICATION: 100 DIAMETERS. A1543 | ||