An anemometer measures wind speed. Whether is it mph, fps, m/s, knots, furlongs per fortnight, etc., all depends on the application.
The ISO length unit to use would be the cementer.
The same unit as you use to measure any mass. The SI unit for mass is the kilogram.
I would use the metric unit is inches
Standard International unit (SI unit)
the square unit of....!
The answer depends on whatever best suits the unit to the question.
If not use the standard unit, you won't get correct answers when calculating.
Milliliters is the metric unit to use for the capacity of a thimble.
Atomic mass unit
It's SI unit is meters
The local currency unit.
The basic metric unit is the metre.