Model Railroad Scale Chart

Scale and Gauges

Scale:          Proportion:          Track Gauge:
   G                        1:22.5, 1:29, 1:32                         1.75"
   O                                   1:18                                   1.25"
   S                                    1:64                                   0.875"
   HO                                1:87                                   0.650"
   TT                                 1:100                                 0.471"
   N                                   1:160                                 0.354"
   Z                                    1:220                                 0.256"