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a metric ruler is a measuring instrument where the units of measures are not inches, but centimeters.

10 millimetres = 1 centimetre

1 inch = 2.54 centimetre

In the world, only three countries haved not yet adopted the metric system: Liberia, the United States, and Myanmar.

To help people used to the older system, it is possible to find rulers that have a double system, the centimetres being engraved on one side of the ruler while inches are engraved on the other side.

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Q: Why is a ruler called a metric ruler?
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What is a Metric ruler vs us RULER?

A metric ruler is a piece of wood or plastic, marked at millimetre intervals.The US ruler is called the president.


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A metric ruler is 30 cm in length. This type of ruler is commonly called a metric foot ruler because it is similar in length to a one foot ruler.


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When do you use the metric ruler?

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The main unit in the metric system is the meter. It measures length.


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