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).
Sourcing an electrical contact thermometer from the Cambridge Instrument Co. to indicate when water is boiling.
| Identifier | ExFiles\Box 175\4\ img023 | |
| Date | 1st May 1926 | |
| To CWB. from Hs.{Lord Ernest Hives - Chair} c. to PN.{Mr Northey} c. to BJ. X3875 HsE/LG6. 5. 26. INDICATOR FOR SHEWING WHEN WATER IS BOILING. X766 ~~X3875~~ We are obtaining a thermometer from the Cambridge Instrument Co., which makes an electrical contact just below boiling point. It can be arranged to operate either a lamp or a buzzer. As soon as we get delivery of this we will fix it up on a car for you to examine. Hs.{Lord Ernest Hives - Chair} | ||