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 diagrams detailing the drilling limits for a petrol pump cover, with multiple cross-sections and measurements.
| Identifier | ExFiles\Box 106\2\ scan0086 | |
| Date | 23th May 1932 | |
| OLD TYPE C68207 LIMITS FOR DRILLING PETROL PUMP COVER E.R.2297 ROLLS-ROYCE, LTD PRINT ROOM MAY 23 1932 DERBY. .650 +5 .300 1.250 -5 1.600 1.085 -5 1.375 .630 +5 .250 .925 1.225 +5 -? (unclear) .011 +4 1.475 -5 1.575 | ||