mm, cm or m.
the meter
The answer is a meter!!!!!!!!!!!
The standard unit for measuring length and distance is the meter (m) in the metric system.
Either a meter stick or a metric tape.
The metre.
A metre.
Width is a length or distance. The unit of length is the meter.
centimeters is the best for measuring the length of a pencil. meters could be used but not as convenient. microns (1 millionth of a meter) is definitely too small.
You would typically use the metric unit of centimeters (cm) to measure the length of a mouse's tail. This unit is commonly used for measuring shorter lengths.
cm
It is a metre.
There is no such measurement. There is either metric measurement or not. Do you mean "fractions" of inches?