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Heart Rate Monitor (1960)

Heart Rate Monitor (1960)

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Heart Rate Monitor

This is a Audio-Visual Heart Sound Recorder. What would happen is they would test your heart rate and it would record the data on a disk (similiar in material to the inside of a Floppy Disk), and show your heart beats on the small orange screen in the bottom left. 

Source: Elephants Trunk Flea Market

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