to the Nn3 Page. Nn3, what does
this mean. "N" indicates
we are modeling in N-scale which
in North America is a ratio of 1
to 160 or 1:160 or 1 foot in the
model equals 160 feet in the real
world. N-scale trains run on 9mm
track. Standard gauge track in the
real world is 4ft 8.5 inches between
the rails. So in N-Scale standard
gauge track is represented by 9mm
track or 9mm between the rails.
The second letter, "n"
indicates that instead of standard
gauge we are modeling narrow gauge.
The could be anything from 18 inches
between the rails to 42 inches between
the rails. "3" indicates
that in fact we are modeling in
N-scale railroads that ran on track
which was 3 feet between the rails.
So much for the technical side.
In practice we use track that was
developed for Z-gauge trains to
run on and it is 6.5mm between the
rails. This equates to 42 inch or
3ft 6in between the rail in real
life. However in practical terms
we model Meter gauge, 3 ft gauge
and 3ft 6in gauge in N-scale using