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).
Advertisement leaflet for the 'Graham' Electrical Autohorn.
| Identifier | ExFiles\Box 49\5\ Scan112 | |
| Date | 30th September 1926 | |
| A SOUND PROPOSITION The “GRAHAM” Electrical Autohorn is a Motor Car Signal which effectively warns, but does not worry, scare or annoy. THE Autohorn is positively reliable, simple to install, convenient to operate, takes little current—about two ampères—and affords a penetrating note of pleasing tone which, projected well ahead, is not disturbing to car passengers. It will be observed the horizontal position of the diaphragm precludes deterioration by accumulation of dirt, dust or water. The “Graham” Electrical Autohorn is BRITISH throughout. The ALL-BRITISH “GRAHAM” ELECTRICAL AUTOHORN MAY BE FITTED ABOVE BONNET . . . UNDER BONNET ON MUDGUARD . . . RUNNING BOARD OR ANYWHERE ON THE CAR Avoid disaster! by fitting the “Graham” Electrical Autohorn S.646 | ||