Glass Triple Scale Hydrometer - Brix, Specific Gravity, Alcohol Full colour, triple scale hydrometer with specific gravity, brix and potential alcohol scales. A very versatile instrument, this hydrometer is ideal for beer and wine makers. Individually handcrafted in the USA to NIST traceable standards. Available with or without a built in thermometer. Calibrated to 20°C / 68°F.Allows you to determine sugar content 3 different ways: Brix scale (0-38%): allows you to measure sugar content as a percentage of weight - most useful for winemakers Specific Gravity (0.990 - 1.170) scale measures a liquid's sugar solids as to the density of water - most useful for beer brewers Potential Alcohol (0-22%) scale determines the potential alcohol content based on the sugar content of the liquid - most useful for everyone Length without Thermometer: 228mm / 9in Length with Thermometer: 304mm / 12in Scale Range Subdivisions Specific Gravity (0.990 - 1.170) 0.002 SpGr Brix (0-38%) .5% Brix Alcohol (0-22%) .5% Alcohol