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What is 7mm Scale?

7mm (O) scale describes the ration between what me model, and what we make.

The scale refers to the conversion factor for the size of our model trains:

7mm = 1 foot.

That is for every 7mm on a model, there is one foot on the real thing. This might not seem all that big a deal, until you remember that HO scale (3.5mm=1 foot) is half our size. That's where HO came from: Half O scale.

7mm scale is big enough to give you the feel of a real railway. Locomotives do not sprint away, nor do they simply stop. They have enough mass and inertia to take time to move and slow down. Just like the real thing.

Yet 7mm scale is small enough to fit in a flat or apartment. Small layouts do not mean boring either. Look at any issue over the past two years of Railway Modeller to see that.

And small layouts can give you more enjoyment in operation, precision and visual impact than you might think. Of course that does not mean that you cannot make a large layout too. And there are several that have been showcased in recent history.

Tell us what you need's content mirrors your need for information. Really. No matter what you model in the 7mm modelling world:

  • Narrow, standard or broad gauge.

  • Past, Present or Future?

  • British, Australian, Himalayan,

  • South American,US prototypes, or wherever you model.

If you model it we want to cover it.

Interested in learning more then come back to the learning center often as we update the thing. Look for the page links too at the left hand side of the page for more information.

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