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).
Log of engine and radiator temperature readings recorded over time during a test.
| Identifier | ExFiles\Box 78\3\ scan0003 | |
| Date | 16th March 1908 | |
| R.R. 148 (5 H) (M.C. 6599. 16.3.08) G.{Mr Griffiths - Chief Accountant / Mr Gnapp} 5639. X446 Engine running 600 revs. Ordinary radiator. Engine started with changed cooler radiator 1. 35. 1. 50 55° C 149° F.{Mr Friese} 74° F.{Mr Friese} 2. 0 66° 170° 2. 15 76° 189° 75° 2. 30 79° 193° 2. 45 81° 196° 76° 2. 50 Windows open. Ordinary radiator. 3. 10 80° 188° 3. 25 79° 185° 3. 45 78° 184° 76° 4. 0. 78° 184° 76° | ||