The hand refractometer is used to measure the density of sugar in a solution. The Brix scale measures between 0 and 32%. Easy to use. Place 2, 3 drops of the sample on the main prism, close the plate and look through the viewing window to read the Brix value. Versatile refractometer with automatic temperature compensation (10℃~ 30℃) and calibration screw (“0000” calibration). Ensures accurate measurement. Focus adjustment ensures precise readability. Numerous accessories: pipette, (for sample absorption), mini-screwdriver (to calibrate to "0000"), cleaning cloth cleaning (to clean the prism). Portable refractometer in a robust housing. Compact dimensions and light weight. Lightweight aluminum-plastic case, easy to carry. Note: The data is all manual measurement, please allow 1 - 3cm error, due to the difference in light and display, there will be some color difference, depending on the physical object received.