Geographical distribution of MRR gauges and random musings

[tv_man]

I think Russ is correct, TT was probably even bigger than HO earlier in this area and thus, being right between HO and N, got rid of the need to have those sizes. As model railroads often tend to be projects spanning many years, there probably was way too much inertia in the form of people modeling TT around the beginning of the nineties to convert to other scales. HO entered the market probably just because of it's sheer size. (in terms of people modeling it, that is)