To begin with ………..thanks for the view of the great models. They look just fine, with oh so much attention paid to the detailing and weathering. I’m really looking forward to get some extra cash so that I can get going on with my modelling. Your models Tom are really a great inspiration for me.
Now to the question of categorising the scale:
My first thoughts on reading the posts on this subject, were G scale – that covers everything from 1/29 to 1/20,3. I suggest that the same could apply to Gn15
I’ve been doing some maths here………..this really feels like school again

, please do correct me if I got the whole mess wrong, however
16,5 mm in 1:23,090909 equals 15”
16,5 mm in 1:21,16 equals 18”
So any difference in size shouldn’t really be noticeable to me anyway. Where did I put my glasses?
Please again correct me for being wrong – but I was under the impression that Gn15 was more a question of having fun and getting things done, rather than counting rivets.
Anyway – I’m looking forward to reading other opinions on this matter.
All the best
Peter