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 for ARIS sparking plugs, showing various models and a detailed cross-section.
| Identifier | ExFiles\Box 33\3\ Scan060 | |
| Date | 8th March 1920 guessed | |
| SUPPLIED TO BRITISH AND ALLIED GOVERNMENTS. ARIS MOTOR CAR TYPES. MOTOR CYCLE TYPE. AVIATION TYPE. TYPE V.{VIENNA} I BRASS. TYPE V.{VIENNA} 2 BRASS. TYPE V.{VIENNA} 3 BRASS NICKELED. TYPE MOTOR CYCLE STEEL. TYPE AVIATION. ALL ELECTRODES ARE OF PURE NICKEL. THREADS — UNIVERSAL, AMERICAN, CONICAL. THE ARIS SPARKING PLUG. PLUGS FOR ALL TYPES OF ENGINES. A REVOLUTION IN SPARKING PLUGS. LONGEST USE. GREATEST SATISFACTION. SECTION Lock Nut Steatite Centre Rod Plastic Metallic Joints Brass Barrel Nickel Electrodes | ||