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).
Specifications for two Weston Galvanometer Model 375 instruments.
| Identifier | ExFiles\Box 33\4\ Scan243 | |
| Date | 20th October 1927 | |
| X1782 20.10.27. X.1782. WESTON GALVANOMETER MODEL 375. Instrument No.13740. A deflection of one division on the scale of this instrument is produced by 17.8 micro-amperes. The full scale deflection of 30 divisions is thus produced by .534 milliamperes. The resistance of the instrument at 16°C is 19.5 ohms, so that the full scale deflection is produced with a terminal P.D. of 10.4 millivolts. ___ Instrument No.15816. A deflection of one division on the scale of this instrument is produced by 17.1 micro-amperes. The full scale deflection of 30 divisions is thus produced by .513 milliamperes. The resistance of the instrument is at 16°C is 22.2 ohms, and the full scale deflection is produced with a terminal P.D. of 11.37 millivolts. ___ EFC. | ||