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).
The order of R.12 short type Champion sparking plugs for F.11 type engines, pending approval from the Air Ministry.
| Identifier | ExFiles\Box 35\3\ scan 187 | |
| Date | 19th January 1928 | |
| ROY.{Sir Henry Royce} c. Hcr. c. Rg.{Mr Rowledge} c. Hs.{Lord Ernest Hives - Chair} c. Er. c. DM{D. Munro}/BL X.4196 BY/Cgh{W Clough}16/G.19.1.28. re F.11 TYPE ENGINES - SPARKING PLUGS. With reference to EP{G. Eric Platford - Chief Quality Engineer}6/H/16.1.28. before we can change over to the R.12 short type Champion plugs, it will be necessary to obtain permission from the Air Ministry, which we understand Rg.{Mr Rowledge} is arranging to do, and in the meantime we consider that we should only order one gross of the new type plugs so that they will be available for dealing with the urgent cases immediately we have received sanction from the Air Ministry. Will ROY.{Sir Henry Royce} please order one gross R.12 Champion plugs, short type, as soon as possible. BY/Cgh.{W Clough} | ||