@Amfleet25124 posted:Yup Mark.
The Brits OO shares the same gauge track as HO in the rest of the world. Where the difference lies in the scale size of rolling stock, structures, vehicles etc.
OO is 1:76 to HO's 1:87.1
Funny how scales differ around the world. For us, O is 1:48, for the UK it's 1:43. N Scale is even more fun with 1:148 (UK), 1:150 (Japan), and 1:160 (US), all using the same gauge track regardless of scale.😄
I was aware of most of those ratios, but didn't know that N in Japan is 1:150 - that seems odd since a lot of N scale was manufactured there.
I'm also amused by how the Brits mix and match metric and imperial measurements despite having gone metric decades ago (on my last visit, highway signs still displayed distances in miles and speeds in MPH). The scales are often referred to by millimeters to the foot - OO is 4mm scale, N is 2mm, and O is 7mm. Why would someone compare millimeters to feet? To further complicate things, British TT was traditionally 1:100 (3mm) but Hornby recently introduced TT in 1:120 scale.
