This is a professional alcohol measurement tool set. There are mainly used for white wine alcohol measurement. Usage: 1. Pour the alcohol into a 250ml graduated cylinder, be careful not to pour too full. 2. Then put a thermometer and alcohol meter (upside down) vertically into the cylinder and don& 39;t stick the cylinder wall. 3. After a moment, read the temperature and alcohol meter. Please Note: 1. This set is mainly used for white wine meter measurement, wine is not recommended to use this measure. 2. The white wine temperature at 20 degrees, measurement results are most accurate. 3. Alcohol meter must be cleaned and dry before use, cleaned with soap or alcohol. 4. After clean the alcohol meter, hand can& 39;t take in engraved line portion, you should gently with your index finger and thumb hold the dry tube top. 5. If you find indexing position paper, glass cracks, surface grime attached and can& 39;t be removed, the alcohol count must immediately stop using. 6. It is fragile product, please keep away from child. Type: Alcohol Meter Material: Glass Alcohol Meter Quantity: 3 Pcs/Set Suitable: Mainly Measure Liquor Alcohol Percentage Alcohol Meter Measuring Range: 0-40, 40-70, 70-100 Thermometer Measuring Range: 0-50 Length: 19.5cm - 21cm/7.68" - 8.27" (Approx.) Notes: Due to the light and screen setting difference, the item& 39;s color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Package Includes: 3 x Alcohol Meters 1 x Thermometer 1 x Alcohol Concentration Meter Temperature Conversion Table