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 comparing the readings of a 'Falcon' foot pump gauge against a Schrader gauge over time.
| Identifier | ExFiles\Box 149\5\ scan0035 | |
| Date | 28th September 1922 | |
| Mr. Hives. from GWH.{George W. Hancock - Head Chateauroux} X993 28.9.22. THE "FALCON" FOOT PUMP. Mins. Pump gauge lbs. Schrader Gauge lbs. 3 20 --- 5 35 --- 7 50 35 slightly over. 8 55 40 O.K. 9 60 45 well over. 10 65 55 slightly under. 11 70 60 O.K. 12 75 65 O.K. 13 80 70 O.K. 14 85 75 slightly under. 15 90 80 " " 16 (17) 95 (100) 80 O.K. (85 O.K.) | ||