[*] LO : Corrected units for weight/volume/distance

UK uses Metric for weight, volume and short distances but uses Imperial  for long distances (i.e. Miles). Yes, it's a silly system here in the UK!
// I will add counties (states) with correct ISO codes when I get chance.
Merge pull request #1086 from rhyslk/1.6

[*] LO : Corrected units for weight/volume/distance