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 durability. 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 accurate and repeatable results. PORTABLE AND VERSATILE: Compact optical instrument ideal for bartenders, alcohol dealers, and food manufacturers. Scale range: 0–80% V/V (alcohol by volume), with 1% V/V divisions. DURABLE CONSTRUCTION: Made from non-staining, non-corrosive aluminum and plastic. Lightweight, scratch-resistant, and built for long-term use. WARNING: Not recommended for use with wine or liquids high in sugar or other dissolved solids.