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).
Request for various sizes of test tubes to be used for oil samples.
| Identifier | ExFiles\Box 136\3\ scan0090 | |
| Date | 10th October 1940 | |
| Hl. from Rm.{William Robotham - Chief Engineer} 139 file oil filters gen. TEST TUBES FOR OIL SAMPLES. Could you please obtain for us twelve 6" and six dozen 4" test tubes. Rm.{William Robotham - Chief Engineer} Rm.{William Robotham - Chief Engineer}11/ML.10.10.40. | ||