I’m into O scale and the rest of the world, it usually seems, is not. Dimensions in model railroad books and magazines are almost always sized to HO scale, or even S scale of all things. Of course, after A. C. Gilbert imploded in 1967 and took American Flyer with it, it seemed like the “S” is S scale stood for “scratchbuild,” because building it yourself was the only way you were going to get anything, so I guess that’s fair.
Here’s a cheatsheet you can use to convert measurements from one scale to another.Assumptions: O scale is 1:48, G scale is 1:22.5. If you use a different measurement for either scale, I’m sorry. This won’t be much use to you.
|G Scale||O Scale||S Scale||OO Scale||HO Scale||TT Scale||N Scale||Z Scale|
Find your scale in the table along the top, then scroll down to the desired scale and find out the factor you need to enlarge or reduce. So, if, say, I have HO scale plans I want to enlarge to O scale, I run across the top to HO, then down to O scale, and see that I need to enlarge the plans to 181%. If I have O scale plans I want to reduce to S scale, I run across the top to O and down to S, and see I need to reduce the plans to 75%.
I’m sure someone will find this useful.