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Keywords from Image Description:
Saussure's Hygrometer diagram. Igrometro di Saussure A' supporti di ottone cm cm rivetti capelli sottili cm vite di sospensione leva indicatore scala di umidit percentuale termometro jstor org seq pagescantabcontents Trowbridge The Use of the Hair Hygrometer Charles Christopher Trowbridge other versions PDold Hair hygrometer