Since there is a link between the Iron Kingdoms and steam locomotives, I often read posts on the Privateer Press forums about model railroading. Most of the time the questions deal with scale and cost of materials. Most of the time the other people responding are correct. However, not always. Please refer to this link which helps describe the scales.I have been involved in model railroading since before I was ten.
Someone mentioned Model Railroad Scale, again. Reblogged for easy access.