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 performance of a device, noting contact uncertainty before operation.
| Identifier | ExFiles\Box 59\1\ Scan125 | |
| Date | 29th June 1920 | |
| RR 238 (150 BKS.) (SH57.29-6-20.) MP 224355 ROLLS-ROYCE LTD. INSTRUCTIONS. To 19 Order No. Customer's No. 2 being normally warm throughout. There were signs of slight uncertainty of contact before the device actually operated. The head-lamps current was always sufficient to restore contact after operating. Signed H.R. This Sheet must be filed on completion of the work. | ||