From Scientific American, September 30, 1911
Image: Scientific American
Overview
Inventors are coming up with many advertising novelties: small mechanical toys made by various companies to advertise some kind of product or service. These devices engage the curiosity of the public, usually because they seem to mysteriously contravene some law of nature.
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1 Comments
Add CommentCould you provide some more information about the clock with no drive train? The construction seems amazing.
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