Comparison of Vacuum Units from Weymann & Co. of Paris with English Autovacs for the Goshawk.
| Identifier | ExFiles\Box 40\3\ Scan018 | |
| Date | 3rd July 1922 | |
| Hs. {Lord Ernest Hives - Chair} from ROY. {Mr H. Royce - Buyer} /3693 ROY {Mr H. Royce - Buyer} /Dnl {Mr Dunwel} 1/HP3.7.22 We send you herewith 3 sets of Vacuum Units (no tanks) supplied by Messrs. Weymann & Co. of Paris. These are for comparison with the English Autovacs which we are employing on the Goshawk(Aero Engine)(Codename for 20HP Car / Aero Engine after Kestrel(Aero Engine)). We shall be glad to have your remarks in due course. ROY. {Mr H. Royce - Buyer} | ||
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).