|
|
|
|
|
|
Zettameter is an SI device for measuring distance. It is equal to 1021 meters. The symbol for zettameter is Zm.
The millimetre (International spelling as used by the International Bureau of Weights and Measures; SI unit symbol mm) or millimeter (American spelling) is a unit of length in the metric system, equal to one thousandth of a metre, which is the SI base unit of length. Therefore there are thousand millimetres in a metre. There are ten millimetres in a centimetre.