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).
Photographic record of aluminium sparking plug washers.
| Identifier | ExFiles\Box 42\4\ Scan032 | |
| Date | 9th December 1931 | |
| PHOTOGRAPHIC SECTION Subject: Sparking plug washers of Aluminium Series No. GY Negative No. 436 Date of Issue: 9-12-31 Location: MAEE Felixstowe Please quote as above for future copies. ROYAL AIR FORCE OFFICIAL CROWN COPYRIGHT RESERVED U/HALCo Date 9-12-31 | ||