Features:    Professional and precise alcohol measurement set   Very easy and convenient to use with thermometer   Suitable for testing the alcohol hydrometer of making white S pirit and beer   Perfect using for home brewing, beer factories, chemical factories, laboratory and so on   Package includes: A box to store 3 pieces alcohol meters and 1 thermometer and 1 measuring bottle（100ml）      How to Use   1, the predicted amount of alcohol first poured into a measuring cylinder ,There should be no dirt or alcohol turbidity.   2, wipe the thermometer set in the graduated cylinder (alcohol temperature should be within the range   0 ~-40 Celsius or should be heating or cooling), and then 30 to 60 alcohol wipe sailed sank cylinder   count, which occurs when three conditions:   a: the indexing level scale range, so be ready degrees.   b: liquid level below the dividing ruler or alcohol meter skew, then can remove the alcohol meter replacement   0-30 specifications;   c: level higher than dividing ruler or alcohol meter sink to the bottom, then remove the alcohol meter.   3,Reading when the liquid level within the indexing ruler stand for 5 minutes before reading,    4 Showing the value of the thermometer From left to right the   investigation, both the value at the cross that is want to measure the actual concentration of alcohol.   Example: in a measuring cylinder with alcohol alcohol concentration was measured at 61 degrees, with   the thermometer measured the temperature is 10 Celsius alcohol alcoholic look-up table of the actual   concentration of 61.7 degrees.      Specification:   Color: White   Thermometer:0 -50 Celsius    Three Alcohol Hydrometers :0-100 Gravity   Material:Plastic + glass         Quantity: 1 Set(other accessories demo in the picture are not included )   Note:1.Please allow 0-1 cm error due to manual measurement. pls make sure you do not mind before you bid.    2.Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you       Package includes(without retail package):   3 x Alcohol Hydrometers   1 x Thermometer    1 x 100ml measuring bottle