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).
Measurements of slack in a Marles Weller steering system over various time intervals.
| Identifier | ExFiles\Box 28\2\ Scan146 | |
| Date | 23th February 1933 | |
| X4094 FILES 23.2.33. MARLES WELLER STEERING. Initial slack = .306" = 1.9° After 9 hrs 15.= .406" = 2.52° 15 hrs 25 = .406" = 2.52° 30 hrs 20 = .475" = 2.95° 43 hrs 20 = .695" = 4.3° Measured at 9.250" radius. I. A.{Mr Adams} Leslie. | ||