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).
Specification sheet for Packard rear springs, detailing weight versus deflection measurements.
| Identifier | ExFiles\Box 127\1\ scan0080 | |
| Date | 23th March 1920 | |
| X.435 23.3.20. PACKARD SPRINGS. REAR. No. 3 - with clips. Positive Chamber 5 1/2 cwts. qrs. lbs. Deflection. 4 2 21 1" 8 1 14 2" 12 1 0 3" 15 1 24 4" 18 3 20 5" 23 0 7 6" 26 0 0 6.500" File. Ex. MAR 26 1920 ATLAS RECEIVED | ||