Specific gravity hydrometers are the most widely used hydrometer, common in industries such as food and beverage, chemistry, pharmacology, transportation, refrigeration, and more. They measure the specific gravity/relative density (g/cmᶟ) of a variety of liquids. Made of lead-free ballast and glass, this 325mm (12.8") long, plain form hydrometer is serialized and has a temperature standardization of 60°F (15°C). It is packaged with a multilanguage (English, French, German, Italian, Portuguese, and Spanish) Statement of Accuracy indicating accuracy traceable to NIST. Note: Precision hydrometers should be stored in a clean, dry, safe place. They should not be subjected to extreme temperatures.