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A metric ruler is use to measure centimeter and millimeters.1 centimeter (cm) = 10 millimeters (mm) .
In the same way that you would use any other ruler except that you use the centimetre scale.
No, but you could use a ruler instead.
To measure a leaf? A Ruler with a Centimeter measurement on it. Or if your like me and the distance from you knuckle to your thumb is 1in, use that ^-^
You could use either, it's just a little more work with the 30 cm ruler, but the result will be the same.You could use either, it's just a little more work with the 30 cm ruler, but the result will be the same.