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).
New electrical revolution indicator or tachometer, with attachments.
| Identifier | ExFiles\Box 165\4\ img205 | |
| Date | 15th July 1933 | |
| S/W To Hs{Lord Ernest Hives - Chair}/Wst. from F.{Mr Friese} Copy to Wor.{Arthur Wormald - General Works Manager} 81807. F4/JL.15.7.33. NEW ELECTRICAL REVOLUTION INDICATOR OR TACHOMETER. Please see the attached copy of a letter, together with the descriptive matter referred to, which has come in on the above subject. Will you please let us know if this is of any interest. F.{Mr Friese} Attachments- Copy of letter from Mr. W.G.Bird dated 14.7.33. Description of invention. WST | ||