1.Measured alcohol range:0 - 40 volume %, 40 - 70 volume %, 70 - 100 volume %, the minimum scale:1 volume %, at the alcohol temperature of 20 .Also includes a 0 - 50 C thermometer.2.Readable:Alcohol hydrometers are made of glass with high transparency.Clear scale helps you to read quickly and accurately.3.Ferrous sand:The ferrous sand in the alcohol hydrometer is even.You are more precise about your result of the measurement.4.Scope of application:Perfect for measuring the pure alcohol-water mixture with / without very small sugar content, e.g.Spirit or distillate, not for the measurement of wine and sugary alcohol.5.Wooden storage box:High-quality wooden storage box with foam is more convenient to take along and use as a plastic box.The alcohol content tester is safe and hard to break.