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).
Service and test record for ignition coil TG2.
| Identifier | ExFiles\Box 45\4\ Scan221 | |
| Date | 17th August 1923 | |
| TALL COIL RECORD Coil No. TG2 X. No. 4079 Date. | Service on. | If on car miles run. | If on test notes re use. | Total miles run. | Remarks re performance. 1-12-22 | Received | — | — | — | In mouldenrite case. 20-1-23 | Bench test | — | General test. | — | Sparking test. OK. 23-1-23 | On 3GII | 2,635 | — | 2,635 | — 9-5-23 | Bench tests | — | Prod^n tests and quantities obtained. | — | — 5-6-23 | Fitted into new case | — | General test. Leakage effect test | — | Fitted into expl case of Redmanol. Compared with T.G1 for leakage effect see report P.B. 98. 8-6-23 | 3GII | 2,912 | — | 2,912. | Replaced L.G.1 on 3GII 13-8-23 | In Lab. | — | — | — | Retd as being faulty. Tested and a short circuit found to be on the primary. 17-8-23 | — | — | Scrapped. | — | Coil stripped to find short on primary, and for any other information that might be found. | ||