Product material: metal + plastic Measuring range: 0-80% Minimum unit: 1% Accuracy: 1% Reference temperature: 20°C Accessories: 1 x measuring device, 1 x pipette, 1 x cleaning cloth, 1 x screwdriver Note: 1. Accurate measurement requires 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 inaccuracies caused by temperature fluctuations. The device automatically adjusts for ambient temperature changes, delivering reliable and consistent results. ENDLESS USE Portable optical instrument ideal for barts, alcohol dealers, and food manufacturers. Scale range: 0–80% V/V (alcohol volume percentage), with 1% v/v divisions. METAL + PLASTIC CONSTRUCTION Constructed from non-staining, non-corrosive, and non-reactive aluminum, this refractometer is durable, scratch-resistant, and easy to carry. NOTE: Not recommended for wine or liquids high in sugar and other ingredients.