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).
The purchase of two glass thermometers for the laboratory.
| Identifier | ExFiles\Box 167\2\ img182 | |
| Date | 21th February 1939 | |
| 6103 To EJJ. Rm{William Robotham - Chief Engineer}/RC.{R. Childs}17/JH.21.2.39. Please order for use in the laboratory 2 glass thermometers from Messrs. Negretti & Zambra: range 0 - 260°C. 4" immersion, total length 15". Rm{William Robotham - Chief Engineer}/RC.{R. Childs} | ||