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 a modification to a con-rod, detailing the drilling of a hole.
| Identifier | ExFiles\Box 86\1\ scan0151 | |
| Date | 4th April 1935 | |
| ROLLS-ROYCE, LTD PRINT ROOM 4 APR 1935 DERBY. B.V.51 2.700 CTRS. OFF SIDE OF ENGINE 1 HOLE DRILL .031 DIA. NEAR SIDE OF ENGINE ALL OTHER DIMENSIONS SEE E.B.1603/4 SCALE 1/1 MODIFICATION TO E.B.1603/4 CON-ROD R.{Sir Henry Royce} Lea 24-9-34 | ||