Material: Metal + Plastic Measurement Range: 0-80% Minimum Unit: 1% Accuracy: ±1% Reference Temperature: 20°C Accessories: 1 x Measuring Instrument, 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. 3. Not recommended for use with wine or liquids containing high levels of sugar or other ingredients. 1. 【EASY AND QUICK MEASUREMENT】: Alcohol refractometer designed to test the volume percentage of spirit alcohol, suitable for brandy, whiskey, vodka, and similar spirits. 2. 【ACCURATE READINGS WITH ATC】: Portable alcohol refractometer with automatic temperature compensation (ATC). The device automatically adjusts for ambient temperature changes to deliver accurate and repeatable results. 3. 【VERSATILE USE】: Portable optical instrument ideal for bartenders, liquor retailers, and food production applications. 4. 【DURABLE CONSTRUCTION】: Made of non-staining, non-corrosive aluminum and plastic. Lightweight, scratch-resistant, and durable. 5. 【IMPORTANT】: Not recommended for wine or liquids with high sugar content or additional ingredients. Note: Measurements are taken manually. Please allow for a 1-3 cm variation. Color differences may occur due to lighting and screen settings. Actual product may vary slightly from images shown.