Hornby introduce……

Hornby have irritated many in TT scale modelling.
Traditional TT was 3mm to the foot scale, roughly half way between N gauge and OO gauge modelling.
The fine scale version of N gauge being 2mm to the foot, and the finescale version of OO gauge being 4mm to the foot.
Hornbys TT is 2.54mm to the foot.
 
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