The O gauge was a zero - and so "smaller" than 1 gauge.
HO was "supposed" to be "half-O" but not quite.
In the 1940's there was quite a battle over what scale HO should be, and you'll note that British HO runs on HO tracks but is bigger than US HO.
S was supposed to stand for "standard" - but nobody but Gilbert used it.
Smaller than HO was another fight ... but I never followed it.
The different types of piano scales that consist of letters are major scales, minor scales, and chromatic scales.
scales
It depends on the scale. Different scales measure at a ratio. Such as N scale, with a 1:160 ratio, a thirty mile per hour train only goes .18 mph in scale.
No. There are many different scales, or gauges, of model trains. For example, an N scale train would be too small to fit on HO scale track.
The anagram is "scales."
Yes an operating model train has friction.
The fastest train is the well-known magnet train.
scales
Athearn model train sets are not necessarily worth more than Lionel train sets. The value of a train set depends on it's age as well as the model of the set.
Mail means the train which carries the post letters. Express train which not.
A model train may be purchased at a hobby shop or toy stores. Model trains are also found online at speciality web stores such as Model Train Stuff or Hobby Linc.
You have to train a very long time to be a model. You must practice constantly. And never give up!