We're presenting you with a little mystery this week! May 22nd marks the birthdate of Sir Arthur Conan Doyle, which seems like a fine opportunity to test our skills of deduction and detection. The invention shown here was featured in a February 1943 issue of Nation's Business. Can you guess what it was intended to do?
Nation’s Business was a monthly publication from the Chamber of Commerce of the United States, the world’s largest business organization representing the interests of more than 3 million businesses of all sizes, sectors, and regions. Chamber members range from small businesses and local chambers to leading industry associations and large corporations.
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