Product Material: Metal + Plastic Measuring range: 0-80%. Minimum Unit: 1% Accuracy: 1% Reference temperature 20C Accessories: 1 * Measuring Instrument, 1 * Pipette, 1 * Cleaning Cloth, 1 * Screwdriver Remark: 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: Do not recommend for wine or others that contain a lot of sugar and other ingredients. 1. EASY & QUICK MEASUREMENT: Alcohol refractometer designed to test the volume percentage of spirit alcohol, for brandy, whiskey, vodka, etc. 2. ACCURATE READINGS WITH ATC: Portable alcohol refractometer with automatic temperature compensation (ATC), no longer worry about temperature change influence...