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).
Request to obtain a vacuum gauge for measuring induction pipe depression on a car.
| Identifier | ExFiles\Box 143\1\ scan0327 | |
| Date | 2nd November 1938 | |
| 1209. EJJ. from Rm{William Robotham - Chief Engineer}/FJH.{Fred J. Hardy - Chief Dev. Engineer} Rm{William Robotham - Chief Engineer}/FJH{Fred J. Hardy - Chief Dev. Engineer}3/R.2.11.38. Will you please obtain for us a vacuum gauge, 3" dia. and with flanged case, calibrated in lbs/sq. inch up to 14 or 15 lbs. Negretti & Zambra appear to make such a gauge. The gauge is required for measuring induction pipe depression on a car. O/No. 52429. Rm{William Robotham - Chief Engineer}/FJH.{Fred J. Hardy - Chief Dev. Engineer} | ||