The calibration test results for a temperature warning device.
| Identifier | ExFiles\Box 165\4\ img187 | |
| Date | 7th June 1933 | |
| Mr Mansell A.I.D. From Hs {Lord Ernest Hives - Chair} /Wst. 53875 Hs {Lord Ernest Hives - Chair} /Wst.1/MA.7.6.33 TEMPERATURE WARNING DEVICE TO LOP's D.52984, 53536 AND 53304. We have now calibrated this device and the following is the result of our tests:- These devices operated one at 70ºC. and the other at 72ºC. on the heating cycle. After cooling down they switched off at 69.5ºC. and 69ºC. respectively. Hs {Lord Ernest Hives - Chair} /Wst. | ||
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).