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timelightbox: Vaginal Photoplethysmograph II: Measures vaginal blood flow indicating the level of sexual arousal in women. Circumference 2.4 in., length 3 in. Sarah Sudhoff cataloged many of the devices, both contemporary and vintage, that the Kinsey Institute has used in its sex research. See more here.
Posted: 3 months ago, with 88 Notes

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  4. sillisa reblogged this from timelightbox and added:
    This contraption scares...hell outta me! Lord, who could get aroused attached to this...
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    taught me everything I know about photography. She was...best professor I could ever ask...
  22. flying-with-the-rest reblogged this from your-cryptomnesia and added:
    cigarette—trees:
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