Blueprint showing a cross-section and side view of a mechanical clamp or mounting bracket assembly.
| Identifier | ExFiles\Box 14\5\ Scan031 | |
| Date | 12th December 1928 guessed | |
| c3 F78146 | ||
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).