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).
Graph comparing the air output of Hadees and Smith fans and blowers at different speeds.
| Identifier | ExFiles\Box 137\2\ scan0283 | |
| Date | 14th November 1938 | |
| Handwritten: File under general, 1158 Graph Legend: ① HADEES TOTAL OUTPUT. ② SMITH TOTAL OUTPUT. ③ HADEES FAN OUTPUT ④ SMITH FAN OUTPUT ⑤ HADEES BLOWER OUTPUT ⑥ SMITH BLOWER OUT PUT. Y-Axis: CUBIC FEET OF AIR/HOUR. X-Axis: FAN SPEED R.P.M. Initials: GWH.{George W. Hancock - Head Chateauroux} Logo: KINWEST SERIES Bottom Left Corner: ACT M | ||