SundayShunter posted:Strictly speaking the standard 32mm gauge is slightly narrower than scale for British O. For absolute scale accuracy some modellers open the gauge to 33mm, ease out the back-to-backs & use scale flanges on wheelsets. This is known as "Scale7", & is the UK equivalent of Proto48.
I did not know that. Very interesting. If I had more time, talent, and money I think I'd be in truly scale camp. I ended up with a proto-48 set of freight trucks in a box of 2 rail US O trucks and didn't realize until I put them on the tracks. The detail on them is tremendous.
Of course truth be told, I'd be modeling in 1:1 if I had more time, talent and money.