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Scaling to S-scale

To size a drawing (for example, from a magazine) from a particular scale to S-scale, use these enlargement or reduction settings on a copying machine:

from O:

reduce by 75%

from HO:

enlarge by 36.1%

from TT:

enlarge by 87.5%

from N:

enlarge by 250%

from Z:

enlarge by 343.75%

To convert from any other scale to S-scale, divide that scale's proportion by 64 and multiply by 100. For example, let's say you want to convert from 1:29 (G gauge) to S. Use the following:

    29 / 64 x 100 = 45.3125%

As an aside, Lionel posted a blog on how to measure and determine scale speed for S-and O-scales.

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