3pcs New Glass Hydrometer / Alcoholmeter Set / Alcohol Tester
An alcoholmeter is a type of hydrometer that indicates the alcoholic strength of liquids. It is also known as a proof and Tralles hydrometer. The alcoholmeter measures the density of the fluid and shows the approximate amount of alcohol present in the fluid. These Alcoholometers have scales marked with volume percents of “potential alcohol”, based on a pre-calculated specific gravity.