>At least you can calculate kilometres on a calculator, try to get an
>output in Miles, Furlongs, Chains, Yards, Feet and Inches! All metric
>measurements are multipliers of a standard unit. The imperial system had
>many standard units.
>Then we start on pounds, ounces, gallons, pints, etc.
The conversion for speeds is dead easy, so long as you remember that
the conversion factor from furlongs per fortnight to cm per min is
1.00
Geoff Lambert