Acid Picdump 2 (72 pics)

#54 Actually, the meter was one ten millionth of the distance from the equator to the north pole, then there was a standard bar of metal, then a multiple of a wavelength of light from a certain isotope.
The foot goes back to Roman and Greek emperors times, later based on the King's measures, until standardized in the U.S. as a fraction of meter.
There's folks that believe the metric system was devised by the French to chip at domination by the English.
The point is that there is that both units are arbitrary. The math is easier in metric, but the units are not always convenient (look up metric ton!)

Metric ton (tonne) is exactly 1000 kg so I dunno what you are trying to get at. Maybe you meant british or american ton? One is 1016 and the other is 907 kg.

Same goes with all of the metric system. 10^3cm of water (1L) weights 1 kg.
I'm to lazy to find each correlation between every type of fluid ounce, weight ounce and feet to give the same equation. And that's it. In metric if you can count to 1000, you understand weight, lenght and volume, in imperial and such, there's no simple and logical correlation.