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L0043841 Male anti-masturbation devices Credit: Wellcome Library, London. Wellcome Images [email protected] http://wellcomeimages.org In the late 19th century it was a widely held belief that masturbation caused insanity and devices such as this were designed to prevent the wearer from touching or stimulating himself. They were often used in mental institutions and sometimes in the home. 1880-1920 Published: - Copyrighted work available under Creative Commons Attribution only licence CC BY 4.0 http://creativecommons.org/licenses/by/4.0/