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).
Instruction sheet regarding production tests on a repaired 4TG3 coil which still appears to be weak.
| Identifier | ExFiles\Box 45\4\ Scan160 | |
| Date | 4th April 1923 | |
| RR.238 (300 Bks.) (SF 152. 6-11-18.) MP 197880 X.4079 ROLLS-ROYCE LIMITED. INSTRUCTIONS. To: E.F.C Order No: P.B.89 Customer's No.: X4079 Date: April 4th 1923 4TG3 Coil. This coil has again been put through the production tests, having been repaired by Mr. Gamble, but still appears to be weak. Attached is the form giving the results of both tests. Signed This Sheet must be filed on completion of the work. | ||