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Millimetre - Wikipedia
Millimeter Definition & Meaning - Merriam-Webster
Convert mm to inches - Unit Converter
How to Measure Millimeters: Rulers, Unit Conversions, & More - wikiHow
MILLIMETER Definition & Meaning | Dictionary.com
What Is a Millimeter? Definition, Formula, Conversions, Examples
MILLIMETER | English meaning - Cambridge Dictionary
MILLIMETRE | English meaning - Cambridge Dictionary
MILLIMETER | definition in the Cambridge English Dictionary
Millimetre (mm) | Britannica