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).
Circuit diagram for a bridge for resistance thermometers.
| Identifier | ExFiles\Box 175\4\ img120 | |
| Date | 14th March 1931 guessed | |
| AIR THERMOMETER 30 ω WATER THERMOMETERS 30 ω ± .01 30 ω STD. 10 ω STD. 1 METRE WIRE = 1 ω G BRIDGE FOR RESISTANCE THERMOMETERS | ||