1. Accurate measurement: 3 spirometers make the determination of the alcohol content much more precise and easier than with a measuring device. Measuring range: 0-40 vol%, 40-70 vol%, 70-100 vol%. Minimum scale: 1 vol%. 2. 1 thermometer 0-50C with a reasonable temperature list. Recommended application temperature is 20C, but if the alcohol is not exactly 20C, you can measure the temperature first and then still read the value in the temperature list. 3. Easy alcohol content calculation (ABV): Graduated ribbons help you see when the brewing is done and our crystal clear fonts are so easy to read. 4. Easy to use: Similar to a brewing hydrometer, but measures in a different area. Using an alcohol meter is very easy. Pour a sample of the spirit liquor to be tested in a tall glass or high chemical tolerant plastic cylinder, leaving enough room for the alcohol meter to distribute the liquid. 5. Measured alcohol range: 0-40 vol%, 40-70 vol%, 70-100 vol%, the minimum scale: 1 vol%, at the alcohol temperature of 20C. The delivery also includes a 0-50C thermometer.