1032% RANGE: The brix meter is designed to measure sugar content in fruit juices, fruits, beverages in the range of 032%, to monitor the ripeness of grown fruits and vegetables or for laboratory studies. 2EASY MEASUREMENT: After calibration place 2 to 3 drops of solution on the prism of the brix meter and point it towards the light, you can get accurate results through the eyepiece and the testing process is simple. 3ATC FUNCTION: The brix refractometer has an ATC function that automatically compensates for changes in ambient temperature and eliminates deviations caused by temperature changes. The high refractive index optical lens and smoothly adjusting eyepiece provide a clear view of the scale. 4HANDHELD AND WEAR RESISTANT: The sugar refractometer is made of aluminum alloy and ABS, rubber, rugged, rust proof, wear resistant and corrosion resistant. 5STORAGE CASE: The portable sugar refractometer comes with a storage case, mini screwdriver for calibration, pipette and cleaning cloth in a random color. Easy to clean and store after use.