Description
Three color 9 1/2″ x 13 1/2″ ad showing a Jet Engine Plane and a “Rocket” Engine Oldsmobile and claiming that “ACs with Patented Coraloz Insulator are Built for Both”. The text talks about the terrific temperatures that the Spark Plugs in a Jet Engine have to withstand which is why Coralox was invented. The Spark Plugs for cars use resistors of the Same Composition. It continues to describe information about in what ways this product will help you and there is a drawing of the two different applications, jet and automobile, showing the difference.
Source: February 22, 1954 Life magazine.
