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).
The overload specifications for the Goshawk 11 instrument board oil gauge.
| Identifier | ExFiles\Box 77\2\ scan0083 | |
| Date | 21th March 1922 | |
| X4235 Wd.{Mr Wood/Mr Whitehead} from BY.{R.W. Bailey - Chief Engineer} (from is struck through) c. Mr Booth. c. Hs.{Lord Ernest Hives - Chair} BY4-P21.3.22. GOSHAWK 11. INSTRUMENT BOARD - RE OIL GAUGE. I note from Messrs. Dewrance's letter of the 20th inst., that they can produce us gauges graduated to 30 lbs per square inch, but able to withstand an overload up to 60 lbs without damage. Will Mr Booth kindly have a note added on the Gauge drawing saying - " This Gauge, whilst only graduated to 30 lbs must withstand overloading up to 60 lbs without damage". Hs.{Lord Ernest Hives - Chair} should note that this Gauge will meet his requirements. BY.{R.W. Bailey - Chief Engineer} | ||