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1950s Rateometer

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Description

This is a teaching tool that was made in the 50s, it is designed to improve reading speed and comprehension. I am interested in finding out what it is worth it is still in the original box, and has the literature that came with it.

Category Scientific Instruments
Medium Metal, and plastic
Distinguishing marks AUDIO-VISUAL RESEARCH
Condition Mint
Date Period copyrighted 1954
Weight 5 pounds
History I'm unsure where it came from.
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