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).
Alteration No. 148 for the Transmitting Water Thermometer, approving its use and requesting modifications for civil aircraft.
| Identifier | ExFiles\Box 175\4\ img117 | |
| Date | 16th February 1931 | |
| By.{R.W. Bailey - Chief Engineer} Hs.{Lord Ernest Hives - Chair} c. Sg.{Arthur F. Sidgreaves - MD} Wer. c. [Redacted] Handwritten: X 2987 Handwritten (circled): 3931 Rg{Mr Rowledge}/SFP3/DM.{D. Munro}16.2.31. Transmitting Water Thermometer. Alteration No. 148. ----------------------- We are sending you herewith copy of letter received from the Air Ministry approving E.37038 Cambridge transmitting water thermometer for use on civil aircraft. Please note Captain Forsyth's remarks with regard to the R.A.E. Report, asking for their suggested modifications to be incorporated. Will you please have this done and then instruct for this instrument to be fitted to all engines intended for civil aircraft. Att. [Stamp: RECEIVED 21 FEB 1931 HS{Lord Ernest Hives - Chair}] Rg{Mr Rowledge}/SFP. | ||