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Metric Unit of Length
The metric system is an international system of
measurement. France was first to adopt it in 1799
and it is now the basic system of measurement
used in almost every country in the world, except
United States.

The standard unit of length in the metric system is
the meter. The symbol for meter is m
metric length symbols
A centimeter is nearly the diameter of a dime, a little less
than half an inch.
This metric ruler shows centimeters
(cm).  A meter stick shows 100
centimeters.
inch ruler
metric ruler
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