Feature:1. Adaptive to most liquid sugar test, concentration meter can be used widely, which is durable.2. Small and accurant refractive index is manufactured through different refractive index of liquid.3. Used in an easy way, compact refractometer is light in weight, convenient to keep up and carry around.4. Convenient for your use, refractometer supports simple and easy-to-understand operation method.5. Via accurancy craft by many experts, such a refractometer is entitled with high performance according to strict rule.Specification:Item Type: RefractometerModel: RHB-20ATCSugar Test Range: 0-20%Measurement Accuracy: 0.1%Material: AluminumAutomatic Temperature Compensation (ATC): 10℃~30℃ (50℉~86℉).Package List:1 x Refractometer1 x Dropper1 x Screwdriver1 x User Manual1 x Cloth(color random)