Aurora had a plunger design and style through which a stack of carbon/silicon discs replaced the rheostat. Considerably less typical designs involved a horizontal thumb-plunger and an entire-grip squeeze controller. In 1965, Russkit released the trigger-operated pistol grip controller. The pistol grip swiftly grew to become the common rheostat-controller fashion https://stearnsy851hjm1.webbuzzfeed.com/profile