The game currently uses imperial units - pound, feet etc. Or more precisely mostly imperial units as there are few confusing metric system units (meters, kilometers) in the mix. We'll be sorting it all up now and will allow system of measurement to be chosen from two configuration options - metric or imperial. In addition you can also configure the precision of units displayed eg. how many decimals fractions to use. Two decimal fractions will probably be the maximum, for the sake of sanity and readability.
We'll probably also add some smaller units eg. grams and ounces, which aren't currently seen at all. So all in all it's gonna be less rounding with numbers and more precise measurements displayed - if you prefer precision. I'd also like to add option for quite vague unit display which emphasize more on common sense, roleplaying and old finnish units - but might be that it's gonna be a future addition somewhere along the way. After the global unit display in the game is reworked it will be quite easy to add new systems of measurements anyway.
These are future additions - not yet functional in current version 3.63.