 Following the advent of these kits, a few other lines of kits became available.Initial community development took place on Yahoo email groups, but these have been superseded by the forums at Gn15.info as the primary form of communication between the far flung practitioners of this scale.Alongside Gn15 other modeling scales have developed to cover both the modelling of minimum gauge lines in scales smaller than G, and 'miniature' lines (less than ) in G scale.