English with metrics?
Since the details aren't accurate AT ALL to either imperial or metric scale, just pretend it says "units" and pretend "arbitrary length" is equal to "one unit".
Paragon Wiki: http://www.paragonwiki.com
City Info Terminal: http://cit.cohtitan.com
Mids Hero Designer: http://www.cohplanner.com
...I guess in that case that's a reasonable option.
This might seem like a silly request, but I was wondering if there is a way to have English activated but metrics being used? I love my games to be in the original language, but I generally can't handle imperial too well, since I've grown up with metrics and metrics only. If it won't work I wouldn't be too shattered of course, but if it can work I'd love to find out how.