Optical Sound wave

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  Optical Sound wave

  Aluminum Tuning Forks

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  Optical Sound wave

  Basic Spectrometer

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  Optical Sound wave

  Basic Spectroscope

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  Optical Sound wave

  BINOCULARS

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  Optical Sound wave

  Bug viewer

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  Optical Sound wave

  DAL PURPOSE RIPPLE TANK

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  Optical Sound wave

  ELECTRICAL TUNING FORK

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  Optical Sound wave

  Fancy bug viewer

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  Optical Sound wave

  Folding Pocket Magnifier

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  Optical Sound wave

  Glass

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  Optical Sound wave

  Glass Lenses, Double Convex, w/ground edges

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  Optical Sound wave

  Gooseneck Magnifier, desk style with flexible hose

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  Optical Sound wave

  HAMMER

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  Optical Sound wave

  Intermediate Spectrometer, Model JJY-1′

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  Optical Sound wave

  KUNDT?S TUBE APPARATUS

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  Optical Sound wave

  Longitudinal Wave Demonstrator

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  Optical Sound wave

  Magnifier with Light, desk style, level/angle adjustable

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  Optical Sound wave

  Magnifier, Foldable black, 2 in 1

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  Optical Sound wave

  Magnifier, Plastic frame and handle, black, rectangle

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  Optical Sound wave

  Magnifier, Plastic Frame and Square Section Handle

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  Optical Sound wave

  MELDE?S APPARATUS

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  Optical Sound wave

  Mini bug viewer

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  Optical Sound wave

  Motion Combination & Resolution Demonstrator

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  Optical Sound wave

  Newton’s Color Disc