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 testing of an aero engine electrical speedometer on a test bed.
| Identifier | ExFiles\Box 165\4\ img101 | |
| Date | 27th November 1930 | |
| To EFC. From Hs{Lord Ernest Hives - Chair}/ACL. X.1350 Hs{Lord Ernest Hives - Chair}/ACL.2/MJ.27.11.30. X.1350. AERO ENGINE ELECTRICAL SPEEDOMETER. We are testing this instrument on number three test bed. It is working quite satisfactorily and is available if you would care to inspect it whilst running. Hs{Lord Ernest Hives - Chair}/ACL. acl RECEIVED 27 NOV 1930 | ||