Blueprint of a piston with an additional sawcut for a Phantom model.
| Identifier | ExFiles\Box 66\1\ scan0129 | |
| Date | 23th February 1927 | |
| A 1.500 1.175 CTRS. B SAWCUT .050 WIDE FOR ALL OTHER DIMENSIONS SEE DRAWING E.73376.D.C. PISTON WITH ADDITIONAL SAWCUT. (PHANTOM). SCALE 1/1. SECTION A.B. .250 DIA. 23.2.27 | ||
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).