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 showing the arrangement of a spring balance for servo tests.
| Identifier | ExFiles\Box 30\6\ Scan218 | |
| Date | 13th October 1933 | |
| ARRGT. OF BALANCE EX. 9690 Ex. 9695 BUSH Ex. 9693 CAP Ex. 9682 SPRING THRUST PIECE. Ex. 9692 BODY. Ex. 9691 ROLLS-ROYCE, LTD PRINT ROOM 13 OCT 1933 DERBY EX. 9690 SPRING BALANCE. SERVO TESTS. Hs{Lord Ernest Hives - Chair} 721 | ||