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 report detailing the average life before breaking for a side steering tube.
| Identifier | ExFiles\Box 119\2\ scan0035 | |
| Date | 1st May 1914 guessed | |
| Wor{Arthur Wormald - General Works Manager}/Mer10/L30414. Sheet. 2 STEERING TUBES. Piece No. | Description. | Time. Hrs. Mins. | Results. | Reference. F3212. | Side Steering Tube. | 12 - 12 | Broke. | Wor{Arthur Wormald - General Works Manager}/Hy{Tom Haldenby - Plant Engineer}5/L201113. Average Life before breaking. F3212. Side Steering Tube. 3 hrs 28 mins. - average over twelve. | ||