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).
Travel table for a starter duplex automatic switch, detailing lever gap measurements at various positions.
| Identifier | ExFiles\Box 64\4\ scan0146 | |
| Date | 29th December 1928 | |
| 29.12.28. STARTER DUPLEX AUTOMATIC SWITCH TRAVEL TABLES As arranged by E.F.C. with carbon interval gap. Position. Main lever gap. Relay lever gap. Rest. .066 .066 Picking up relay lever and breaking top contact. .056 .066 Breaking relay carbon contact. .046 .056 Making main carbon contact. .038 .048 } Making main copper contact } Making lower relay contact .025 .035 Main lever right down .005 .015 Relay lever right down .005 .005 EFC. | ||