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).
List of specifications for a biflex arm and lamp reflector, marked as sheet 2.
| Identifier | ExFiles\Box 167\1\ img042 | |
| Date | 25th August 1936 guessed | |
| (sheet 2) (11) The biflex arm to be taper ended with elongated rectangular badge in centre. (12) The lamp to be equipped with a vertical striped reflector and same beam distribution as P.100. E.{Mr Elliott - Chief Engineer} | ||