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).
Agreeing to an order for Lodge sparking plugs with a specified minimum annular gap.
| Identifier | ExFiles\Box 79\1\ scan0079 | |
| Date | 2nd December 1919 | |
| X.601. Wd.{Mr Wood/Mr Whitehead} To for Mr. Clark, Experimental Dept. from E.P. Copy to Wd{Mr Wood/Mr Whitehead} FP{F. Potts}/T13/T201216. Re Lodge Sparking Plugs. ---------- With reference to your memo EFC 1/T201216, we agree that Lodge plugs with 15 thou annular gap should be ordered up, provided it is specified that the gap must not, under any circumstances, be less than this. EP.{G. Eric Platford - Chief Quality Engineer} STAMP: RECEIVED DEC 02 19 FOOTER: R.R. 238 B (200 T) (S.C. 636. 18-2-16) G.{Mr Griffiths - Chief Accountant / Mr Gnapp} 1647 | ||