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).
Letter requesting further information on the K.B.B. vibrometer from Messrs Kelvin Bottomley & Baird, Ltd.
| Identifier | ExFiles\Box 138\2\ scan0133 | |
| Date | 29th March 1938 | |
| 1163 March 29th.1938. Rm{William Robotham - Chief Engineer}/Gry.{Shadwell Grylls}3/AP. Messrs Kelvin Bottomley & Baird, Ltd., 18 Cambridge Street, GLASGOW, C2. Dear Sirs, We have a few particulars of the K.B.B. vibrometer, but should be glad of a little more information. Are there suitable reeds for measuring frequencies up to 15000 per minute.? At high frequencies is the instrument sensitive to small amplitude vibrations such as caused by the piston torque of a 6 cylinder petrol engine.? What is the force of the instrument.? Yours faithfully, FOR ROLLS-ROYCE LIMITED. | ||