Modeling The Ann Arbor Railroad

O scale
1/4" = 1'
Ratio 1:48

 -The models shown are O - HO - N scale in relationship as to size -

S scale
3/16" = 1'
Ratio 1:64

HO scale
3.5 mm = 1'
Ratio 1:87.1

N scale
1.92 mm = 1'
Ratio 1:160