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 a machined circular component with specifications for drilling and grinding.
| Identifier | ExFiles\Box 173\3\ img020 | |
| Date | 2nd June 1940 | |
| ..OOK IN 6 INCHES 13/64 .602 5/8 7/32 5/32 14/32 9/32 R 9/32 3/4 RAD 5° 20° 70° 40° 5/32 DRILL - 10 HOLES IN ¢ OF 7/16 GROOVE CAM GRIND SHOWN ON REVISIONS D C B A PREVIOUS CHANGED TO SEE DO NOT SCALE THIS BLUE PRINT THIS IS A PROPOSAL DESIGN ONLY, TO BE TESTED AND APPROVED BY THE VENDEE BEFORE BEING ADOPTED. TOLERANCE ON ALL FINISHED DIM. TO BE +-0.010 OF AN INCH. UNLESS OTHERWISE SPECIFIED. DATE 2-6-4 ROUGH WEIGHT DESIGNED BY DRAWN BY CHECKED BY APPROVED | ||