Features Precise refractive index: the refractive index based on the different refractive indices of the liquid is very accurate. Universal Application - Wide range of application scenarios, suitable for most liquid sugar testing. Reliable to use - Strict quality control and quality assurance, a high safety factor, can be used with peace of mind. Compact and Portable Design - Small size, easy to carry and store, easy to use and with good performance. Simple operation - Simple and easy to understand operation method, convenient for your use. Specification: Item Type: Refractometer Sugar Test Range: 0-50% Measurement accuracy: 0.1% Material: aluminium. Automatic Temperature Compensation(ATC): 10℃~30℃(50℉~86℉) Package list: 1 x Refractometer. 1 x Dropper 1 x Screwdriver 1 x user manual (English language not 1 x Cloth (Random Color) Note: Fabric color is random Package List 1 x Refractometer 1 x Dropper 1 x Screwdriver 1 x User Manual 1 x Cloth