9 Free Photos of Automatograph

historyhistoricalpopular science monthly illustrations/volume 41
PSM V41 D660 Automatograph tracings of a pendulum and a metronome
historicalhistory
PSM V41 D655 Counting metronome traced by an automatograph
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PSM V41 D656 Automatograph traces of thoughts by metronome timing
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PSM V41 D655 Timed movements of counting metronome and automatograph
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PSM V41 D657 Automatograph trace of building with different hands and positins
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PSM V41 D660 Automatograph trace of 25 second hand movement
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PSM V41 D661 Automatograph tracing of an 11 year of child arm movement
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PSM V41 D659 Thoughts of a foot recorded vertically in 45 seconds
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PSM V41 D658 Metronome counter trace of 20 seconds
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