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).
Differences between two specific Elliott Ammeters (Nos. 153012 & 164148) and the standard drawing F.75652/5.
| Identifier | ExFiles\Box 168\5\ img210 | |
| Date | 1st February 1931 | |
| Roy.{Sir Henry Royce} from EFC. X4622 EFC2/AD3. 2. 31. X.4622. ELLIOTT AMMETERS NOS. 153012 and 164148. Replying to your Roy{Sir Henry Royce}/Ms7/P20.1.31, the two Elliott ammeters numbered as above correspond to drawings F.75652/5 except in respect of a few minor details. No.153012 has a larger cream dial than standard and No.164148 has 3/16" terminal studs instead of the standard 1/4". These items do not affect the fitting of the instruments in the patch. Both cases have been filed away on the flange also we are not in possession of the terminal covers as shown on the drawing. EFC. | ||