Item Type: Clinical Refractometer_x000D_ Product Size: Approx. 17x4x4cm / 6.7x1.6x1.6in_x000D_ Weight: Approx. 287g / 10.1oz_x000D_ Material: Copper_x000D_ 0~12G/DI (Serum Protein)_x000D_ 1.000~1.050SG (Urine Specific Gravity)_x000D_ 1.3330~1.3600ND (Refractive Index)_x000D_ Minimum Scale Value: 0.2 G/DI 0.002SG 0.0005ND 1Function: The digital refraction instrument is used to measure the sugar content and specific gravity in urine. It can accurately determine the concentration and specific gravity of urine and serum protein 2Portable: Sugar content tester is easy to use, strong design, compact volume, light weight, easy to carry 3Automatic Temperature Compensation: With automatic temperature compensation function, making fast results 4Material: Strong and durable, easy to use and transport, mainly made of copper, light weight, not easy to damage 5Suitable : Digital refractometers are ideal for parents and the elderly in their families. It can help them learn about serum proteins and test for sugar content in urine 1 x Refractometer 1 x Cloth 1 x Instruction Manual 1 x Straw 1 x Screwdriver 1 x Plastic Box