Sinotech Hand Held S.g. 1.000-1.130 Brix 0-32%brix Wine Wort Beer Brewing Refractometer Rsg-100atc Measuring Range: 0-32%Brix; SG: 1.000-1.130 Minimum Division: 0.2%Brix; 0.001sg This hand-held optical refractometer measures the density of sugars in the solution and gives you an instant gravity readings at any point during the boil, or run off from the mash. This refractometer is specifically created for brewing of BEER Test: Sugar in Fruits vegetables grasses Wine or beer