Romsey Model Railway Show
Occasionally I would visit the Romsey Model Railway Show in Crossfield Hall, Romsey with my Dad, and sometimes with my Brother.
Railway Modelling
Railway Modelling
TT Scale Layouts
TT was my father's favorite scale. Table Top railway modelling. He was also a member of the 3mm Society.
Apparently there is a British TT and a Continental TT, and of course, they are different scales.
3mm is short of a scale of 3mm to 1ft. There are some calculations that can go with that. A foot is 304.8mm, generally approximated to 305mm. The scale factor is therefore 101.6. This is very close to the frequently used architectural scale of 1:100. There are some convenience's in this coincident.
Standard Gauge railway, the distance between the rail heads, is 4' 81/2". The metric equivalent of that is 1435mm, or strictly 1435.1mm. The 3mm to 1ft scale size of Standard Gauge is 14.124mm. This is also known as 14.2 Fine scale. Whereas the normal TT gauge is 12mm. Tri-ang and later Peco produced 12mm gauge track for TT.