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).
Requesting an official order for two pairs of pistons for a D.A.S.10 shock damper from the Armstrong Patents Co.
| Identifier | ExFiles\Box 152\2\ scan0173 | |
| Date | 26th January 1940 | |
| 1293. To Les c. to G/JWH. Rm{William Robotham - Chief Engineer}/C1m.8/JH.26.1.40. Will you please issue an official order to the Armstrong Patents Co. for one pair of pistons fitted with piston rings, and one pair having .001" diametrial clearance for D.A.S.10 shock damper. Rm{William Robotham - Chief Engineer}/C1m. | ||