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 special front and rear spring plates, detailing their thicknesses in inches.
| Identifier | ExFiles\Box 87\4\ scan0091 | |
| Date | 16th September 1935 | |
| THOS. FIRTH & JOHN BROWN Limited. Continuation Sheet No. 1. Special Front Spring F.B.1248. See R.R. letter dated.16.9.35. Plate Nos. | Thickness - Inches. H & T. 1.M.P. | .23. 2. | .22. 3. x | .20. 4. | .19. 5. x | .18. 6. | .16. 7. x | .15. 8. | .15. 9. | .15. Total: 1.63. Special Rear Spring F.B.896. See R.R. letter dated.16.9.35. Plate Nos. | Thickness - Inches. H & T. 1.M.P. | .26. 2. | .26. 3. x | .25. 4. | .24. 5. | .24. 6. x | .23. 7. | .23. 8. | .22. Total: 1.93. [Signature] Clip Plates marked - x. [Watermark: ABBOTSFORD BOND MADE IN GT BRITAIN] | ||