Cách sử dụng
A millimetre is a unit of measurement used to measure very small things. It is one thousandth of a meter, which is a little longer than a yard. You might use millimetres to measure the height of a plant, the thickness of a piece of paper, or the diameter of a small object. For example, if you have a piece of paper that is 0.1 millimetres thick, it is very thin! You might also use millimetres in construction or engineering, to measure the size of screws, bolts or nuts. Overall, it is a very small unit of measurement that is useful in many different situations when you need to measure something precisely.