Aurora had a plunger style by which a stack of carbon/silicon discs replaced the rheostat. A lot less popular types involved a horizontal thumb-plunger and a complete-grip squeeze controller. In 1965, Russkit launched the bring about-operated pistol grip controller. The pistol grip speedily grew to become the conventional rheostat-controller style https://confuciusu639adf8.fliplife-wiki.com/user