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).
Material composition analysis of a returned Mercedes sparking plug rod.
| Identifier | ExFiles\Box 76\3\ scan0078 | |
| Date | 11th September 1918 | |
| R.R. 26 10M Bks.) (SE 591 13-3-18). M.P. 189358 ROLLS-ROYCE LIMITED. INSTRUCTIONS. To Mr. Hives 11/9/18 191 Order No. # Customer's No. Lab Re. Sparking Plug Rod. (returned herewith) (Mercedes) Nickel = 95.8 % Manganese = .35 % Copper = 2.1 % Iron = 1.0 % Aluminium = Traces. Signed Jodh This Sheet must be filed on completion of the work. | ||