en.wikipedia.org/wiki/Units_of_measurement

A unit of measurement is a definite magnitude of a quantity, defined and adopted
by convention or by law, that is used as a standard for measurement of the ...

www.unc.edu/~rowlett/units/

A dictionary of units of measurement: explanations of the metric system, System
Internationale (SI), English customary system, and other modern measuring ...

www.mathsisfun.com/measure/unit.html

In Measurement we talk about "Units" ... what are they? A unit is any
measurement that there is 1 of. So 1 meter is a unit. And 1 second is also a unit.
And 1 m/s ...

www.edinformatics.com/math_science/units.htm

International System of Units. Background Information. "The creation of the
decimal Metric System at the time of the French Revolution and the subsequent ...

unitsofmeasure.org/ucum.html

The Unified Code for Units of Measure is a code system intended to include all
units of measures being contemporarily used in international science, ...

www.splung.com/content/sid/1/page/units

Units of measurement, standards, history of the metric system, SI units, weights
and measures. Base units and derived units.

www.convert-me.com/en/

Everyone asked this question at least once when struggling with some units
conversion task. Why isn't there one measurement system that everyone uses?
Alas ...

github.com/unitsofmeasurement

Units of Measurement provides a set of APIs and services for handling units and
quantities. ... Units of Measurement Implementation for Java SE 8 and above.

phrontistery.info/unit.html

None of the 153 units of measurement below is as interesting as that, but they
just might be more useful, often in scientific and technical contexts. The proper
unit ...

www.physchem.co.za/extras/units.htm

Units and measurements. Without a widely accepted system of units of
measurement our civilization could not exist. Imagine the chaos if there were no ...