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 valve, showing dimensions, tolerances, and notes on quantity and fittings.
| Identifier | ExFiles\Box 105\3\ scan0328 | |
| Date | 3rd April 1933 | |
| F100695 3-4-33 Hs{Lord Ernest Hives - Chair} 973 .760 -5 .525 -3 .950 +10. .300 +15. .250 DIA -1. .137 DIA +3 .825 ±10. .350 DIA TOP OF TAPER +1/2 .437 DIA -1/2. TAPER 28° ±1/4° VALVE - 4 OFF - S/N N.SCH 3497 LARGER VALUE VALUE HATS F59307 TO BE FITTED. ROLLS-ROYCE, LTD PRINT ROOM 4 APR 1933 DERBY. | ||