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 components for a Vibration Amplitude Indicator.
Identifier | ExFiles\Box 137\4\ scan0033 | |
Date | 6th September 1929 | |
X 634. 6.9.29. VIBRATION AMPLITUDE INDICATOR. Components :- Vibration potentiometer of R.R. design and make. Weston type 375. galvanometer, full scale deflection about 600 μa R.R. ignition condenser in parallel with same. 40 volt H.T. dry battery. 2 volt L.T. battery. Length of triple flex, together with Volt amplitude amplifier and indicator comprising :- One 2 volt D.E.6. Osram valve. One 2 " D.E.2.H.F. " " Two standard valve holders. One 300,000 ohm Dubilier Duwirohm resistance. Holder for same. One 10 megohm Dubilier Dumetohm resistance. Holder for same. One .05 m.f. Dubilier type B.775. condenser. One 3 point switch, or the equivalent. Terminals. EFC. | ||