Brix/Specific Gravity Refractometer w/ATCThis refractometerinstantly reads gravity, in Brix and gravity. Only a few drops or wort mash are required for getting a reading of the sample. Simply drop 2 3 of the liquid to the refactometer, close the lid, and look through the eye hole. Measures from 0 32 Brix and 1. 000 to 1. 120 Specific gravity. Includes ATC (automatic temperature compensation) between 50 86 F Ideal for Home Brewning, Wine making, and mash making. Durable and Easy to Use & Carry