Hi @nic_man,
Let me start by welcoming you to our community! 
If you haven’t already, feel free to Introduce yourself 🙆 to everyone hanging around here 
Now, onto the problem. It seems like you’re getting the units in a “localised” form, so I’m assuming you have your Rhino in a language that is not english?
I’d have to check this out with a bit more detail, but the fastest way to fix this on your side (I’m hoping) is to modify your Rhino installed language. I’ll also ping @teocomi, since I recall having this issue (or a similar one) in the past…
To change the language you can follow this post from the Rhino peeps:
We’ll try to fix this on our side for the upcoming release 2.8, but if you’re able to check the language change, we’d love to hear if that did the trick!
Thanks for reporting this!!