Show Oxyacetylene acetylene Pantograph An adaptation of ot the pantograph t t I the o oxyacetylene acetylene flame Is one of ot th latest efforts to control mechanical that powerful agent for cutting col metal According to the American the pantograph has an ele elec- elec driven wheel that follows th pattern and both hoth advances the cuttin flame at a n given rate depending o 0 othe 01 S the thickness of the metal and guide gulde the flame Harne accurately either elther In So s sor or In n curved cun-cd lines Jines i |