0 - 32% brix sugar refractometer, is also an essential instrument for checking emulsions and grinding solutions. Measuring Range: Brix (Sugar): 0 - 32%, Resolution: Brix (Sugar): 0.2% Automatic Temperature Compensation (10 ℃; ~ 30 ℃;) and calibration screw (calibrating "0") Easy to use. Place 2-3 drops sample on the main Prism and close the panel and hold the refractometer up to the light and look through the eyepiece. Heavy-duty and lightweight with its brass construction. Durable and built to last long, uses ambient light only which means battery or power source is not required. Equipped with scale measurement which provides direct reading, Easy to focus and calibrate.Accurate testing results guaranteed