Product DescriptionMaterial: Metal + PlasticMeasuring Range: 0-80%.Minimum Unit: 1%Accuracy: 1%Reference Temperature 20CAccessories: 1 measuring instrument, 1 pipette, 1 cleaning cloth, 1 screwdriverNote:1.Accurate measurement based on good calibration, please calibrate the refractometer before your first use.2. Please keep the refractometer dry and clean, which can make the instrument accurate and durable.NOTE: Not recommended for wine or others which contain a lot of sugar and other ingredients.1. Alcohol refractometer easy and fast measurement designed to test the volume percentage of spirit alcohol, for brandy, whiskey, vodka, etc. NOTE: Not recommended for wine or others which contain a lot of sugar and other ingredients.2. Accurate Readings with ATC: Handheld alcohol refractometer with automatic temperature compensation (ATC), no need to worry about temperature change influencing reading accuracy. The alcohol volume percentage refractometer will consider changes in ambient temperature and automatically compensate accordingly to provide accurate and repeatable measurements.3. Endless Application: It is a portable optical instrument for bartender, alcohol retailer and food production, etc. The scale range is 0-80% V/V (V/V - alcohol volume percentage), division: 1% v/v.4. Metal + Plastic: The alcohol refractometer is made of non-staining, non-corrosive and non-reactive aluminum, lightweight to carry, anti-scratch and durable.5. NOTE: Not recommended for wine or other products containing high sugar and other ingredients.