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).
Blueprint of a flexible metal bellows assembly, model SV70 Large Type.
| Identifier | ExFiles\Box 39\4\ Scan141 | |
| Date | 4th September 1930 | |
| SMITHERMET FOR ROLLS ROYCE, - (SV70 LARGE TYPE), 50°, 26°, SV 70, RR 20, 3/32", RR 22, .425" TRAVEL !, .175" MINIMUM., RR 21, .150", RR 23, 4-9-30 | ||