One of the most important decision model train enthusiasts have to make is the scale they will use. The scale represents the ratio of the model train to its real life counterpart, and there are six popular train scales from which to choose. Here are the scales from smallest to largest:

Z scale – 1:220 ratio N scale – 1:160 ratio HO scale – 1:87 ratio S scale – 1:64 ratio O Scale – 1:48 ratio G Scale – 1:22 ratio

When selecting a scale, you should keep in mind the following three factors:

1) How much space do you have? For small spaces (like apartments), the N scale may be best. You need to consider the size of your bench-work when making this decision, as it is the primary limiting factor for the scale size you select.

2) How much selection do you want? The “HO” scale is probably the most popular train scale used today, and because of this there is a wide variety of scenery and trains to choose from and the competition keeps the prices fairly affordable. You may find the selection for the very large and small sizes a bit more limited. You also are more likely to find used model railroad and scenery elements for HO and N sizes for sale on eBay and in classified ads, if that is an important consideration for you.

3) Will the model train be used indoors or outdoors? If you are considering building a outdoor exhibit, you may want to consider the largest size (”G”) as the trains and scenery elements will generally be made for outdoor use and be suitable for use in nearly all weather conditions.

Once you have selected the model train scale you are going to use for your layout, you will find there variety of clubs, shows and publications dedicated to the model you have chosen.

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