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 a machining modification to a casting to allow clearance for a union nut.
| Identifier | ExFiles\Box 179b\3\ img245 | |
| Date | 16th February 1933 guessed | |
| THIS CASTING TO BE MACHINED LOCALLY WITH A .750 DIA CUTTER TO ALLOW CLEARANCE FOR UNION NUT INLET SIDE OF CYLS. ...ARRIED ...MOST ...TION .200 1/16 1/2 R 1/32 R | ||