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).
Test data sheet for a Packard N.S. spring showing deflection under various loads.
| Identifier | ExFiles\Box 127\1\ scan0084 | |
| Date | 23th March 1920 | |
| 23. 3. 20. PACKARD SPRING. N. S No. 1 - with clips. Positive Camber 7.500" cwts. qrs. Lbs. Deflection. 2 7 1" 5 0 0 2" 6 2 17 3" 8 2 15 4" 10 3 10 5" 12 3 7 6" 15 0 0 7" 18 2 15 8" 19 3 6 8.500" EX. MAR 26 1920 RECEIVED | ||