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).
Combined speedometer and tachometer unit and a single speedometer for various car models.
| Identifier | ExFiles\Box 179b\1\ img330 | |
| Date | 1st February 1933 guessed | |
| (3) speedometer and tachometer patch based on Smith's effort, which we have seen, and consider to be extraordinarily good as far as the lighting is concerned. We suppose this combined unit will be used eventually on P. 2. continental touring saloon, and the 20/25 special touring saloon. We shall also need a single speedometer with its own illumination for use on the standard P. 2., 20/25., and Peregrine, but of course there is no great hurry for this. TA/V.{VIENNA} | ||