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).
Chart showing the heat output of an S.2 car heater at varying water flow rates.
| Identifier | ExFiles\Box 137\1\ scan0232 | |
| Date | 22th December 1936 guessed | |
| CHART SHOWING HEAT OUTPUT OF S.2 CAR HEATER AT VARYING WATER FLOW. CONSTANT AIR FLOW = 90 CUB. FT / MIN (AT 12 VOLTS ACROSS MOTOR) X-Axis: WATER FLOW GALLONS / MIN. Y-Axis: B.T.U'S / HOUR / 100°F TEMP. DIFF. Stamp: CLAYTON DEWANDRE CO. LTD. TITANIC WORKS LINCOLN CX{Major Len W. Cox - Advertising Manager} / 96 (L.452 / C3) | ||