Product Parameter Product Name Beer Digital Refractometer Scale Brix and Wort D20/20 Brix Range 0.0-50.0% Brix Brix Resolution 0.10% Brix Accuracy ±0.2% Wort D20/20 Range 1.000 - 1.130 Wort D20/20 Resolution 0.001 Wort D20/20 Accuracy ±0.002 Item Size 2.44 × 4.88 × 1.26 inches Case Size 4.13 × 6.50 × 1.65 inches Weight 9.52 ounce Power supply One battery Color White, Dark grey and Orange Material Plastic and Metal Screen Display The LCD screen of the instrument has three main display areas, namely the main display area, temperature display area and multi-function display area: 1. Battery capacity; 2. Main display area; 3. Percentage and per thousand units; 4. Refractometer unit; 5. Temperature display area; 6. Multifunctional display area. Battery Information Battery volume and display volume signs. Please note：When the battery indicator is less than 20%, it is a reminder that you are about to change the battery. Buttons There are three digital refractometer buttons, as follows: "Read" button: used to start and measure; "Calibration" button: used to perform "zero point" calibration; "Scale" button: switch between different scale values, and switch the temperature system between Celsius and Fahrenheit. Converting Scales Converting : The VGT series could support up to 10 scales. Temperature Systems Converting The VGT Series digital refractometer supports conversion between two temperature units: Celsius (0.0~40.0°C) and Fahrenheit (32~104.0°F).Press the "SCALE" button for 2 seconds to convert the temperature unit.If the temperature conversion limit is exceeded, the temperature display area displays a mark such as "HHH" or "LLL". Screen Display Battery Information Buttons Converting Application The digital beer refractometer is particularly suitable for the measurement of the specific gravity (sg) in beer, the quantity of brix and wort in beer. Package 1 × Digital Refratometer 1 × Battery 1 × Pipette 1 × Manual 1 × Cloth 1 × Paper Box Operational Process and Package Operational Process 1. Press "READ" button make up the machine startup; 2. Open the cover, drop some water into the mirror by using pipette; 3. Close the cover, press "READ" button for 1~2s, when LCD display shows 0.0% finish calibration; 4. Clean the water on the mirror by using the cleaning cloth; 5. Use the straw to draw the liquid to be tested into the mirror, then close the cover; 6. Finally, press "READ"button, we will see the testing result on LCD display.