That makes sense. All the measurements are in imperial. Drives me nuts, but as long as I don't campare things to IRL, I'm ok. 5 feet becomes just a square that represents 5 to me when I game.
If you think conversions between metric and imperial is confusing, you should try dealing with measurements which have the same name, in spite of having completely different values. For example, a conversation I had about a month ago:
Someone: I saw some really expensive socks for sale.
Me: How much?
Someone: 30 dollars.
Me: That isn't expensive.
Someone: No, I mean that they cost 30 US dollars.
Heh- Coming from NZ I get that a lot. That and colloquialisms. I once offened an RP channel by telling a character that they should get changed into some shorts. Now, in NZ and other ENGLISH english speaking countries, Shorts are short trousers/pants/longs. summer clothing. To Americans, they are like underwear but in what we call a boxer format, ie, everyone in the PG13 forum thought that my character was being fresh with another character. I use 'mate' a lot when I RP too. To us, it's friend. To others... a little closer. I'm constantly looking up Americanisations on the net there. They don't bother giving me that benefit I've found. It's frustrating. I ended up changing my signature to 'Forgive me- I'm not American' so people remembered that I say things that don't always mean what they think it means.
Feet to meters is OK if it's around my height cause I know I'm 5'7", but besides that, I can't handle imperial. Whos great idea was it to divide everything by 12?! That doesn't divide out cleanly! I have to deal with it though. A lot of wire, drill bits, screws etc... at work are in imperial, and I need to know that 3/32 is 2.4mm and stuff like that T.T
What makes it worse is I think only America still uses the imperial system. I'm pretty sure that everyone else has moved on

I may be wrong about that though.