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).
Instructions for handling and adjusting Bleriot Phi Cutouts based on their serial numbers.
| Identifier | ExFiles\Box 48\3\ Scan262 | |
| Date | 16th July 1921 | |
| X.4215 16.7.21. X.4215 - BLERIOT PHI CUTOUTS. Bleriot cutouts Nos. 38657/9 which are sealed, to be untouched. -> 5EX Bleriot cutouts Nos.38656/38660 are passed for fitting on cars. These can be tried again in the hot condition just to confirm the previous reading, and should only be readjusted if such adjustment is obviously necessary. Cutouts Nos. 38658/81 to be adjusted in accordance with directions. EFC. {E. Fowler Clarke - Electrical Engineer} 38658 GoshawkAero EngineCodename for 20HP Car / Aero Engine after KestrelAero Engine Chassis 38660 Test bed. | ||