Precise measurement: accurate test results, easy to calibrate, you can accurately measure Brix, Baume and Alcohol content in seconds. Three-in-one wine detector: portable refractometer three-in-one with a measuring range of 0-25% Vol, 0-40% Brix and 0-22 Baume. Use scenarios: suitable for restaurants, wineries, wineries, dinner parties family, etc. High quality aluminum, durable: Made of high quality aluminum, strong and durable. Specification: Material: Aluminum Color: as pictures shown Measurement range: 0-25% Vol, 0-40% Brix, 0-22 Baume Length: about 15.5cm/6.1 in Using Instruction: 1. Open the cover, use a clean cloth to wipe the prism. 2. Take a few drops of the test liquid on the detection prism, then slowly close the lid to avoid producing bubbles which will spread the liquor over the entire surface of the prism. 3. Place the cover directly on the light source or bright place, observe the field of view through the eyepiece. 4. Rotate the eyepiece to adjust the steering wheel to make the blue and white line clear. The scale value of the dividing line is the liquor concentration. Note: 1. Please allow 0-1 inch error due to manual measurement. Thank you for your understanding. 2. Monitors are not calibrated same, item color displayed in photos may be showing slightly different from the real object. Please take the real one as standard. Delivery Quantity: 1 piece