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 detailing the dimensions, radii, and drilling specifications for a shaped component.
| Identifier | ExFiles\Box 170\1\ img006 | |
| Date | 14th January 1938 guessed | |
| DRILL .316 DIA. ('O' DRILL), C'SINK .10" DEEP x 120° INCL., Dimensions and Annotations:, .550, 3.562", 3.437", .780", .656", .625", .25", .10" R.{Sir Henry Royce}, .156 R MAX, .20", .187" R.{Sir Henry Royce}, 6°, 4°, .51" R.{Sir Henry Royce}, .32" R.{Sir Henry Royce}, .312" R.{Sir Henry Royce}, 1.375 R.{Sir Henry Royce}, .488", .824", .771", .810", .750", .75", .45 R.{Sir Henry Royce}, .18", 1.42 | ||