1915 introductions

sign representing a temporary stop traffic regulation

electronic oscillator

thumb|Two people seated in an Electriquette (1915) The Electriquette was an electric vehicle with a two-person bench seat and exterior made of rattan (wicker). The vehicle was an early form of battery-powered motorized wheelchair or cart, and it utilized a motor manufactured by General Electric. At the 1915 Panama–California Exposition in San Diego, California, the Electriquette could be rented for $1.00 per hour (). A variation of the vehicle was later manufactured for disabled veterans of World War I. No original chairs are known to have survived, but in 2016 new chairs were designed and rei

line-of-sight device for locating fires