Miles.
meters
Use units of millimeters, meters, or kilometers.
You use exactly the same instruments to measure speed in the metric system as you use in any other system. For example, a speedometer, or a distance measuring device and a stopwatch. The difference is that these devices are calibrated in metric units, instead of old-fashioned units.
Kilometers
Kilograms
meters
Use units of millimeters, meters, or kilometers.
Meters
You use exactly the same instruments to measure speed in the metric system as you use in any other system. For example, a speedometer, or a distance measuring device and a stopwatch. The difference is that these devices are calibrated in metric units, instead of old-fashioned units.
base on what you measure to use the metric units.
inches or centimeters, I would use inches.
dm is a metric units of measure the world noway days use! dm = decimeters
Kilometers
This information is already posted at Wikipedia as follows: http://en.wikipedia.org/wiki/Metrication_in_Australia
What metric unit would you use to measure a computer keyboard
pounds=english grams=metric
A ruler