STORY OF A SPARK PLUG

Made in cooperation with the Champion spark plug company. This is an older film re-released under title "Along the firing line, or the story of a spark plug." The silent revised version was released in 1937, it runs for 30 min; the sound version, released in 1942, runs for 34min. "Story of the spark plug; use in gasoline engines, fire trucks, airplanes, etc., with animated several toy animation of the spark plug; making insulators, brass caps and electrodes with assembling, point setting, and packing." Colorado. "[Useful in] general science, physics, commercial geography and shop work [classes]." Am. museum of nat. hist.