In 2006, before I stared my own company, I briefly did some Gn15 modelling. I still do like the idea of large scale minimal gauge. That is what Gn15 is … 15″ rails (equal to 16mm in 1/22.5 scale, it’s H0 track) in G-Scale like LGB and others. You would find the originals in parks as “park railway” as well as in industrial surroundings as light industrial transport system.
I don’t know when Gn15 started but I do know, that you can do amazing things with very little space. Prime source for information about Gn15 is www.gn15.info. This is what they say about Gn15:What exactly is Gn15?
Carl Arendt: Gn15 is a scale/gauge used in railway modelling. “Gn15″ is American-style notification, telling us that models in this scale use the same scale as standard ‘G scale’ garden railways (between 1:20.3 and 1:24), the “n” tells us that it’s a scale used on narrow gauge railways and the “15″ that the scale is intended to represent 15 inch gauge prototypes.
What this effectively means is that you get the dual benefits of working in a big scale with plenty of detailing possible but in a very small space, which means you can bring garden railroading indoors.
Alternative notations would be G16.5 (G scale using 16.5mm gauge track) and Gn1¼ (G scale representing a 1′3″ prototype gauge). Gn15 seems the easiest of the three to type, say and remember!
Emrys: Gn15 is also the only one of the three options I could use as a URL.
Another good source for inspiration is “Carl Arendt’s Small layout Scrapbook“. It is not limited to GN15 but to Small / Micro Layouts for Model Railways. If you want to meet more modellers from around the world building in Gn15 head over to the Forum called “The GnAtterBox“