Hygrometer
Hygrometers indicate the percentage of humidity to help you when making processed meats or when dehydrating fruit or drying meat.
The thermo-hygrometer is an essential measuring instrument when steaming and drying.
![Analogue hygrometer with a thermometer](https://cdn3.tompress.co.uk/I-Autre-21147_278x278-analogue-hygrometer-with-a-thermometer.net.jpg)