The 009 scale, which is used to represent narrow gauge lines of 2ft to 2ft 6in, is experiencing a steady growth in popularity and trade support. Narrow Gauge Modelling in 009 Scale explains issues of scale and gauge for narrow gauge models, considers the origins of 009 scale and identifies some of its pioneers. It outlines the diverse range of prototype narrow gauge railways in Britain and overseas, along with some of the different traditions and practices adopted in different parts of the world.