Measurement Resources
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A Dictionary of Units of Measurement
When does a ton weigh just over an ounce? How much alcohol is in a methuselah? And what is the diameter of a gnat's eye, anyway? These and other questions are answered by the Dictionary of Units of Measurement.
Measurement Converter
A "measurement conversion calculator that recognizes any combination of over 800 conversion factors, prefixes, constants, abbreviations, and synonyms." Browse the "Measurements & Currencies Recognized" pages to choose any combination of metric, American, English, historical, and ancient measures.