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).
Potential standardization of Ferranti ammeters to replace the current Weston type.
| Identifier | ExFiles\Box 168\5\ img310 | |
| Date | 27th December 1934 | |
| Hs{Lord Ernest Hives - Chair}/Wst. WST -Giss- ROY{Sir Henry Royce}/MS11/P.27.12.34. AMMETERS. Please advise whether you are yet in a position to standardise the Ferranti Ammeter in place of the present Weston type fitted to all chassis. You will recollect a short time ago you stated a Ferranti instrument was fitted to a chassis in France running 10,000 miles, and we should like to know the result of this test. We would point out that we are continually returning ammeters to the Weston Electrical Co. for correction after being on cars only a short time. Roy.{Sir Henry Royce} [Signature] | ||