Blueprint showing the grinding dimensions for experimental E.A.C. pistons.
| Identifier | WestWitteringFiles\N\2October1925-December1925\ Scan4 | |
| Date | 9th October 1928 | |
| GRINDING DIMENSIONS FOR EA. C PISTONS [EXPL] A 4.247 DIA -1 .750 +.050 4.247 DIA. -1 SECTN "AA {D. Abbot Anderson} " 41° 45' 41° 45' PRESS. & SPLIT SIDE GROUND CONCENTRIC FOR 1.550 OR 41°45' 1.550 4.230 DIA. -1 4.247 DIA. -1 GRINDING OVER GUDGEON PIN SIDES SHOWN BY SHADING GIVING .010 CLCE EACH SIDE. THE BOTTOM OF THE SKIRT IS A TRUE CIRCLE 4.247 DIA. ROLLS-ROYCE LIMITED PRINT ROOM, 9 OCT 1928 DERBY. aag | ||
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).