Product description: Word SG: 1,000 ~ 1,120, accuracy +/- 0.002 Brix: 0 ~ 32% ATC range: -10 ~ 30 C (50 ~ 86 F) Dimensions: 172 x 40 x 40 mm Package includes: 1 x beer refractometer 1 x calibration screwdriver 1 x pipette 1 x cleaning cloth 1 x instruction manual Description: The refractometer is a high-quality, optical test device for quick and easy measurement of different liquids. The zero line is individually adjustable. Measuring range of the refractometer: Brix: 0-32% alcohol: 0-25% Easy to use: place 2 or 3 drops of the sample on the main prism, close the plate and look through the viewing window to read the Brix value; Calibration: zero calibration with water at 20 C, automatic temperature compensation between 10 C and 30 C (ATC) The refractometers are delivered in a hard plastic box including a mini screwdriver and pipette. Instructions for use are also supplied