Instructions and report on the testing of Del'tavis 215 type plugs.
| Identifier | ExFiles\Box 33\3\ Scan214 | |
| Date | 4th July 1922 | |
| RR 26 10M BKS (SH 688 5-11-20) MP 231103 X1812 C. ROLLS-ROYCE LTD. INSTRUCTIONS. To Mr Hives 4/7/ 1922 Order No. Customer's No. Del'tavis 215 type Plugs These plugs were fitted to 1 EX on the 18/3/22 and ran 3,582 miles without trouble. Magneto present. They were then handed over to the Dynamometer Test and will have further through internal test and from ignition side after 4 hrs running. Signed [Signature] This Sheet must be filed on completion of the work | ||
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).