Thermo hydrometer itself suggests the combination of two and that is thermometer and a hydrometer. Herein, a hydrometer enclosed a thermometer to indicate the temperature of the liquid under test. This is handy device and can measure potential alcohol and specific gravity of the collected sample. The attached thermometer allows taking correct reading of the alcohol or pure water and water with sugar dissolved in it. It is a glass tube with a weight on one end that takes the reading by floating in the liquid. Hydrometer test jars can be used to take the samples of any kind liquid but before that jar has to be cleaned.