Product material: metal + plastic Measuring range: 0-80% Minimum unit: 1% Accuracy: 1% Reference temperature: 20C Accessories: 1 x measuring device, 1 x pipette, 1 x cleaning cloth, 1 x screwdriver Note: 1. Accurate measurement depends on proper calibration. Please calibrate the refractometer before first use. 2. Keep the refractometer dry and clean to ensure accuracy and longevity. EASY AND FAST MEASUREMENT: Alcohol refractometer for testing alcohol volume percentage in brandy, whiskey, vodka, and similar spirits. ACCURATE READINGS WITH ATC: Handheld alcohol refractometer features automatic temperature compensation (ATC), eliminating errors caused by temperature fluctuations. Automatically adjusts for ambient temperature changes to deliver reliable and consistent results. PORTABLE AND VERSATILE: Compact optical instrument ideal for bartenders, alcohol distributors, and food manufacturers. Scale range: 080% V/V (alcohol by volume), with 1% V/V divisions. DURABLE CONSTRUCTION: Made from non-corrosive, non-reactive aluminum and plastic. Lightweight, scratch-resistant, and built for long-term use. WARNING: Not suitable for wine or liquids high in sugar or other dissolved solids.