A '''Millimeter''' (mm) is a [[Metric system|metric]] unit of measurment equal to one thousandth of a [[Meter| meter]]. An [[Inch|inch]] is equal to 25.4 mm.
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A '''Millimeter''' (mm) is a [[Metric system|metric]] unit of measurment equal to one thousandth of a [[Meter| meter]]. There are 25.5 millimeters in one [[inch]].