![](http://photos1.blogger.com/blogger/353/70/320/magnascope.png)
Another dead but cool medium that is similar to the epidiascope. "Just as a post-card projector displays small opaque objects, so the new [new for 1939, that is] device, called a “magna-scope,” throws a highly enlarged image of a man’s face upon a translucent screen."
-- modern mechanix