Letter concluding that instruments passed an insulation test.
| Identifier | ExFiles\Box 168\5\ img339 | |
| Date | 8th December 1937 | |
| -2- 8th. December 1937. We found the instruments quite satisfactory on our insulation test, which was carried out on the 200 volt, A.C. mains through a lamp. Yours faithfully, for ROLLS-ROYCE LTD. | ||
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).