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 for balance weights for a 25 HP crankshaft.
| Identifier | ExFiles\Box 103\3\ scan0070 | |
| Date | 23th July 1931 | |
| Hs{Lord Ernest Hives - Chair} 359 1.625 3.062 +15 Rd 2.187 1.125 +15 BALANCE WEIGHTS FOR 25 HP CRANKSHAFT E55619 TO BALANCE CRANKSHAFT AND BIG ENDS FITTING DETAILS TO SCH 1402 OTHER DIMENSIONS TO SCALE SCALE 1/1 ROLLS-ROYCE LIMITED PRINT ROOM 23 JUL 31 DERBY | ||