More sub catagories:

Scale 1:22,5 - Gauge G
Scale 1:24
Scale 1:25
Scale 1:32 - Gauge 1
Scale 1:35
Scale 1:43
Scale 1:48
Scale 1:50
Scale 1:72
Scale 1:87 - Gauge H0
Scale 1:100
Scale 1:120 - Gauge TT
Scale 1:144
Scale 1:160 - Gauge N
Scale 1:200
Scale 1:220 - Gauge Z
Scale 1:350
Scale 1:400