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).
Wiring diagram for a Bleriot PHI cutout.
| Identifier | ExFiles\Box 48\3\ Scan158 | |
| Date | 17th November 1920 | |
| X.4215. X.4215. DIAGRAM OF BLERIOT PHI CUTOUT Insulation AC MC X R 4.2 oW Sh .655 w Se 1 D- 2 B- 3 D+ + - E. {Mr Elliott - Chief Engineer} & C. 17.11.20 | ||