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 an Ignition Coil Assembly with handwritten part numbers and annotations.
| Identifier | ExFiles\Box 163\7\ img084 | |
| Date | 10th November 1926 | |
| NEG 034292 024337 34286 SOLDER DOUBLE LEAD SOLDER Red Stamp: ROLLS-ROYCE LIMITED. PRINT ROOM 10 NOV 1926 DERBY. Title Block: FIRST USED ON MATERIAL MAT SPEC HEAT TREAT THE AYRTON ENGINEERING LABORATORY IGNITION COIL ASSY DATE Nov 25, 1926 SCALE DRAWN BY APP'D CH'K'D BY DRG. NO. 415 | ||