This started life as a put your money where your mouth is project. After reading one of Codstickers threads.
In short came across Modelux railway models. Very pretty ,might have some cross over potential.
Decided I'd go with a Gasometer.(top pic)
Tried ordering on the site.But the lag was terrible (used phone) so I ordered one from they're eBay store.
Ho 220mm diameter 160mm tall. N gauge listed as 120mm tall.
I decided the HO was would take up too much table. So I thought the N gauge at 120mm. Would give a responsible alternative.
I decided I'd build a walled base to represent a gas works and protect the card model. So I fired off an email asking for the diameter of the model I'd ordered as I couldn't find it in the description. I explained what I was intending on using it for,and that i could work on the assumption that it was ratios were the same as the HO version.
Here the reply,🤔
Turns out it's not 120mm,its 85mm,and to add insult to injury. When it arrived the dimensions on the packing says 110mm x 90mm.