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).
Office order requesting the purchase of a ten-inch focus convex lens.
| Identifier | ExFiles\Box 27\4\ Scan233 | |
| Date | 27th November 1930 | |
| O.O. From Hs{Lord Ernest Hives - Chair}/Rm.{William Robotham - Chief Engineer} Hs{Lord Ernest Hives - Chair}/Rm.{William Robotham - Chief Engineer}4/MJ.27.11.30. x30351 Will you please obtain for us one ten inch Focus Convex Lens 3" dia. We anticipate that the cost of this will only be a few shillings but should it be more expensive will you please let us know. Hs{Lord Ernest Hives - Chair}/Rm.{William Robotham - Chief Engineer} | ||