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 proposal to order half a dozen Lucas ammeters with modified movement for testing.
| Identifier | ExFiles\Box 168\5\ img361 | |
| Date | 7th July 1939 | |
| c. Rm{William Robotham - Chief Engineer}/RC.{R. Childs} BY.4/G.7.7.39. LUCAS AMMETER WITH MODIFIED MOVEMENT. With reference to the recommendation made in Rm{William Robotham - Chief Engineer}/RC.{R. Childs}8/JH.4.7.39. to order half a dozen Lucas ammeters type BM. with improved movement Nos.LT.2022 and LT.2023, I am in agreement with the proposal and would like you to order up for early delivery half a dozen of the ammeters under discussion. I know we have spent considerable time and energy with Lucas on this instrument, and it appears to be at least equal to the Weston instrument. This is the point of course we would like to verify by having half a dozen on test. BY.{R.W. Bailey - Chief Engineer} | ||