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).
Order request for a Weston box type combined ammeter and voltmeter for the Experimental Department.
| Identifier | ExFiles\Box 33\4\ Scan195 | |
| Date | 3rd August 1920 | |
| X 1782 c to Mr [REDACTED] Clarke (Experimental) EJJ5/EW.3.8.20. X 1782 Re Experimental Department. Please order for the above from the Weston Electric Co., 1. Weston box type combined ammeter and voltmeter containing the following range. 1.5 to 15 amperes. 1.5 " 15 and 150 volts. An instrument with external shunt preferred. EJJ. [STAMP] E C AUG 2 RECEIVED | ||