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).
Specification table for a Weston Milli-Volt-Ammeter Model 1, detailing its ranges and resistances.
| Identifier | ExFiles\Box 165\3\ img026 | |
| Date | 11th August 1930 | |
| -3- Description. Weston Milli-Volt-Ammeter Model 1. Number and connections. 22596 [Handwritten diagram of resistor network with terminals labelled 600, 150, 1.5, .015, Ohms.] [Handwritten diagram of coil network with terminals labelled 1.5, 15, +.] Volt ranges. .075 (at 18°C.) 1.5 15 150 600 Ampere ranges. .0141 .15 1.5 15 150 600 Resistances. (ω) 5.31 (at 18°C.) 109 1090 10900 43600 .490 .0887 .00768 Remarks. Instrument only. External volt coil box. External shunts. | ||