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).
Confirmation and request for micro-photographs of fluff from a choked jet and particles from various filters.
| Identifier | ExFiles\Box 44\1\ Scan108 | |
| Date | 2nd February 1927 | |
| To Hl. from Hs{Lord Ernest Hives - Chair}/Rm.{William Robotham - Chief Engineer} X4037 Hs{Lord Ernest Hives - Chair}/Rml/LG23. 2. 2. 27. This is to confirm that you will take a micro photograph of the sample of fluff actually extracted from the choked jet, also of the specimens with which we have supplied you of the largest particles of foreign matter which have passed the Zenith and Auto Klean filters. As a matter of interest we think it would be desirable if we could supply a fourth micro photograph of our standard carburetter filter gauze on the same scale - sample of which we attach. Hs{Lord Ernest Hives - Chair}/Rm.{William Robotham - Chief Engineer} | ||