Features The refractive index made according to different refractive index of the liquid is very accurate Simple and easy-to-understand operation method, convenient for your use Wide range of application scenarios, suitable for most liquid sugar test Strict quality control and quality assurance, high safety factor, can be used with peace of mind Small size, easy to carry and store, easy to use and with good performance Specification:Item Type: Refractometer Sugar Test Range: 0 - 80% Measurement Accuracy: 0.1% Material: Aluminum Automatic Temperature Compensation (ATC): 10℃~30℃ (50℉~86℉) Package List:1 x Refractometer 1 x Dropper 1 x Screwdriver 1 x User Manual  1 x Cloth  Note:The color of the cloth is random Package List 1 x Refractometer 1 x Dropper 1 x Screwdriver 1 x User Manual 1 x Cloth