Template:HO scale
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HO scale
(1:87)
Rail track gauges
NEM
16.5 mm
-
H0
(standard)
12 mm
-
H0m
(metre)
9 mm
-
H0e
6.5 mm
-
H0f
NMRA
16.5 mm
-
HO
/
Proto:87
(standard)
12 mm
-
HOn3½
10.5 mm
-
HOn3
9 mm
-
HOn30
7 mm
-
HOn2