Product description Material: metal + plastic easuring range: 0-80%. Minimum unit: 1% Accuracy: 1% Reference temperature 20C 1.[ Hand-held Alcohol Oenometer ] Used to measure the density of alcohol in the solution,like whiskey, brandy, vodka, tequila etc 2. [ Measuring Range ] Alcohol:0 to 80% v/v,with a sharp dividing line (blue-white) to ensure accurate readings 3.[ Easy to use ] Place 2 - 3 drops of sample onto the prism, and then look through the eyepiece for both the density of alcohol readings 4.[ Convenient to store ] Compact in size and light in weight, packed with a plastic case, convenient to store and carry around 5.[ Applications ] Widely used in scientific research, food industry production, alcohol purchase and management