HOe (HOn30) SCALE, 1:87
Narrow gauge versions of all these scales are also often used in small layouts. A very attractive example is this condensed HOe layout, Île Ne Saispas, built by “Nomm D. Pleum” in the Netherlands. Best known perhaps as a collector (and dealer) of Egger-Bahn narrow gauge trains, “Nomm” has constructed this scenic layout to show off his narrow-gauge rolling stock. The actual measurements of the layout are a secret — “Nomm” says that visitors are often amazed at how small it is! You can see many more views of his trains and scenery at his website.
Track gauge for HOe trains is 9mm, the same as N scale. It represents about 30-inch or 750mm narrow gauge prototypes.
UPDATE — Responding to a number of your requests, “Nomm” has kindly provided a track plan of the Île Ne Saispas, along with an aerial photo taken especially for Small Layout Scrapbook. At last, the layout dimensions are revealed! Note: most of the upper level is carved into the rock and not visible from the air.
Gn15 SCALE, 1:22.5
When you get into scales larger than HO, you’re talking about some real ingenuity required to produce a working railway in a very small space (under, say, 8 feet in length). But it can be done — the Micro Layout Design Gallery on this site includes a number of clever small layouts in O scale (1:48) and even G scale (1:22.5) and 7/8″ scale (1:13.7)! And there are more on the way.
One good strategy is to use extra narrow gauge trains, whose prototypes are small and which use very tight radii. Here’s an example by Palle K. Steffensen, from Svendborg, Denmark. Palle likes to “doodle” … i.e., to sketch small layouts rather than draw them up to exact scale. He’s also a member of his local G scale club, LGB Gruppen Svendborg.
Palle has doodled this small layout to use as a module with the club’s large, G-scale layout. Palle describes it like this: “This micro-layout is designed for top mounting on the club’s modular LGB layout, with a 15″ gauge train dumping ore into the LGB cars. It’s basicly an Inglenook switching layout with one leg curving into a factory which also serves as a hidden fiddle yard. That is why I gave it the name Inglebend Works. The Gn15 layout size is 90 x 35 cm (36 x 13 in).”
(Note: I have added color to Palle’s original pencil sketch.)
Gn15 scale uses HO-gauge track width (16.5mm) to represent a prototype gauge of 15 inches (381 mm), used for industrial, mining, and small estate railways. Several commercial locomotives and a selection of rolling stock are available in this scale, which even has a dedicated website.