Item Type: Refractometer_x000D_ Model: RHB-20ATC_x000D_ Sugar Test Range: 0-20%_x000D_ Measurement Accuracy: 0.1%_x000D_ Material: Aluminum_x000D_ Automatic Temperature Compensation (ATC): 10~30 (50~86) 1Adaptive to most liquid sugar test, concentration meter can be used widely, which is durable. 2Small and accurant refractive index is manufactured through different refractive index of liquid. 3Used in an easy way, compact refractometer is light in weight, convenient to keep up and carry around. 4Convenient for your use, refractometer supports simple and easy-to-understand operation method. 5Via accurancy craft by many experts, such a refractometer is entitled with high performance according to strict rule.1 x Refractometer1 x Dropper1 x Screwdriver1 x User Manual1 x Cloth(color random)