Thermohydrometer - Wine and Beer

Hydrometer with built in thermometer, measures liquid density or specific gravity (S.G) to monitor fermentation and sugar levels.  Helps homebrewers and winemakers determine alcohol and sugar content.
The temperature of the liquid being measured will effect the gravity reading. Use an online calculator to adjust your gravity reading with the built in thermometer.
https://www.brewersfriend.com/hydrometer-temp/