Millimeter, centimeter, decimeter, meter, kilometer, miles, nautical
miles, foot, yard, inch, cubit, parsecs and light years. With all
these measurements distances can be calculated. And this is not even
close to all the possible measurements, rather only the most common
ones. In the case of areas (square meter, square kilometer, are, hectare,
Morgan, acre among others), Temperatures (degrees of Celsius, Kelvin,
Fahrenheit), Velocity (m/s, km/h, mph, knots, mach), weights (hundred
weight, kilogram, metric ton, US ton, imperial ton, pound among others)
and volumes (cubic meter, hectoliter, imperial gallon liquid, US gallon
liquid, US gallon dry, barrel among others) is not much better. To
complete the chaos the majority of these units also have subunits
and supra units (-> milli, centi, deci among others). In short: Chaos,
in which no one really seems to see clearly without the help of a
reference and varied forms of help, like for example this website.
