Old school metric units The last time I stuck a rule on Aristo track, the "five foot" lengths were 1500 mm, the "one foot" 300 mm, etc.; similarly, the "two foot" radius is 600 mm (yes, LGB R1), the "five foot" radius (wot I use on my main line) is 1500 mm (or "10 foot" diameter = 3000 mm). Ditto USAT. Not surprising, since it all comes/came out of China, shamelessly cribbed from the LGB geometry -- although Aristo had a broader range of curves.
There is a saying, What goes around, comes around", or something like that.
A while back, Nov 2016, post 270 on page 14, of this rubbish I post from time to time. I dressed my Gourmino coach, which resulted in an enquiry as to the source of the table items food etc..
As I had not used all of the items, and if they could be used by someone else, all I needed was the address to post to, the surplus was dispatched to pastures new. Now fast forward to now ish, and a recent post in the daily chat that I was looking for two items, resulted in a return delivery of sorts arriving earlier this week.