Kammala jumla mai zuwa: Hammer's tarin kwararan fitila mai haske daga ko'ina cikin duniya an mai da shi "Tarihin Fasaha" kuma ya nuna shi a lokuta daban-daban a cikin nunin lantarki da nune-nunen. Ya fara nuna shi a 1882 a International Electrical Exposition a Crystal Palace a London kuma an ba shi lambar azurfa don gabatarwa. Lokacin da ya gabatar da tarin a
St. Louis World's Fair na 1904 an ba shi babban kyauta.