Lee Valley Sugar Tester (Brix Refractometer). New in the box. 6 1/2" overall. Complete with storage case, juice dropper and instructions. An unusual and very useful tool. Use to judge when fruits and vegetables are at their peak for harvesting, or it can be used to select plants based on sugar content for propagation or harvesting programs. Also used to judge potential alcohol content from juice you intend to ferment. Simple to use, it lets you know the exact sugar content and potential alcohol content. If you are making alcohol and the sugar level is too low, more sugar can be added. See link for more info.