High transparency: the high-transparency alcohol hydrometer adopts high-quality borosilicate glass with clear scale which can help you read it quickly and accurately. and the measurement results will be more accurate because of the uniform iron-containing sand. Accurate scale: 0-100 Vol%, the minimum unit is 1Vol%, equipped with three alcohol hydrometers of 0-40 Vol%, 40-70 Vol%, 70-100 Vol%, which is more accurate than the traditional single hydrometer and easy to get exact alcohol content. Application scope: Suitable for measuring alcohol and water mixtures without sugar or with very low sugar content, such as spirits or distilled spirits. (Not applicable to wine or liqueur); its a good helper for every bar or family. Alcohol content measurement helps to dilute the drinking strength of homemade brandy, gin or to measure the alcohol content of the distillate. Rich supporting facilities: You don't need to purchase measuring tools separately. At the time of delivery, we also provide a thermometer that matches the alcohol meter 0-50 (32-122); temperature and concentration conversion tables make measurements more accurate. Wooden storage box: The set is equipped with a wooden storage box which can prevent breakage and easy handling, moisture-proof and shock-proof. Its a great gift and collection, it will help you keep everything in organized.