What hides this stereogram?

Stereogram - 3D Image

#brainteasers #stereogram #3Dimage

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You hear about the c...

“You hear about the chiropractor that was a comic? He cracks me up.”

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Typesetting machine

In 1857, a U.S. patent was issued for the design of a typesetting machine invented by Timothy Alden of New York (No. 18,175). This is the first such machine that actually operated. The type was arranged in cells around the circumference of a horizontal wheel. As the wheel revolved, several receivers also started to rotate. The desired type was picked up and dropped in proper order in a line.

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