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).
And drawing detailing the bracket position for a 15-inch lift jack on a 12.B.V. model.
| Identifier | ExFiles\Box 140\2\ scan0213 | |
| Date | 24th June 1939 | |
| 466 To By/NS.{Norman Scott} from Rm{William Robotham - Chief Engineer}/Gry.{Shadwell Grylls} c. Da.{Bernard Day - Chassis Design} c. Les.{Ivan A. Leslie} Rm{William Robotham - Chief Engineer}/Gry.{Shadwell Grylls}3/MH.{M. Huckerby}24.6.39. JACKS - B.V. We have now got a 15" lift jack and find that with one bracket fixed 6 1/4 inches from the bottom we can jack 12.B.V. off a rim both front and back. A 15" lift jack with the bracket in this position should be instructed on the LOP. Rm{William Robotham - Chief Engineer}/Gry.{Shadwell Grylls}// 6.25o | ||