Title: mechanical hygrometer Long Title: IUPAC Gold Book - mechanical hygrometer DOI: 10.1351/goldbook.M03801 Status: current Definition An apparatus containing an element (hair, goldbeater's skin, carbon-film) whose dimension or mass varies as a function of its water content. Related Term - film: https://goldbook.iupac.org//terms/view/F02366 Source - PAC, 1990, 62, 2167. 'Glossary of atmospheric chemistry terms (Recommendations 1990)' on page 2195 (https://doi.org/10.1351/pac199062112167) Other Outputs - html: https://goldbook.iupac.org/terms/view/M03801/html - json: https://goldbook.iupac.org/terms/view/M03801/json - xml: https://goldbook.iupac.org/terms/view/M03801/xml Citation: Citation: 'mechanical hygrometer' in IUPAC Compendium of Chemical Terminology, 5th ed. International Union of Pure and Applied Chemistry; 2025. Online version 5.0.0, 2025. 10.1351/goldbook.M03801 License: The IUPAC Gold Book is licensed under Creative Commons Attribution-ShareAlike CC BY-SA 4.0 International (https://creativecommons.org/licenses/by-sa/4.0/) for individual terms. Collection: If you are interested in licensing the Gold Book for commercial use, please contact the IUPAC Executive Director at executivedirector@iupac.org . Disclaimer: The International Union of Pure and Applied Chemistry (IUPAC) is continuously reviewing and, where needed, updating terms in the Compendium of Chemical Terminology (the IUPAC Gold Book). Users of these terms are encouraged to include the version of a term with its use and to check regularly for updates to term definitions that you are using. Accessed: 2026-06-28T22:32:30+00:00