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HOn30 gauge

modelling of narrow-gauge railways

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Record originEnglish Wikipedia
Text licenseCC BY-SA 4.0
Source revisionMay 12, 2026
Entity authorityQ5635537
Source-derived summary

HOn30 (also called HOn2½, HO9 and H0e) gauge is the modelling of narrow-gauge railways in HO on N-gauge track (9 mm / 0.354 in) in 1:87 scale ratio.

Definitions

The term HOn30 (and sometimes HOn2½) is generally used when modelling American railroads while H0e is used for European railways. In Britain, the term OO9 is used. All these terms refer to models of narrow-gauge railways built to the world's most popular model railway scale of HO (1:87) but using a track gauge of 9 mm (0.354 in)—the gauge used for N-scale models of standard-gauge railways. OO9 refers to OO scale, 1:76.2, models on 9-millimetre-gauge track. Although the track gauge is 9 mm, sometimes N-scale track per se is not used because the ties or sleepers are out of scale and too close together. As such, HOn30 track is available.

HOn30

HOn30 is often used to model the 2 ft (610 mm) gauge railroads in the US state of Maine. The first HOn30 / HOn2½ ready-to-run (RTR) brand introduced in the US was the AHM MinitrainS, initially manufactured by Egger-Bahn and later by Roco and Mehanoteknika Izola, also known as Mehano.

Perhaps the most fascinating part of HOn30 is that RTR models are still scarce.

Editorial summary

The public source identifies “HOn30 gauge” as modelling of narrow-gauge railways. This brief keeps that definition visible, then builds a research path around HOn30, gauge and modelling.

Editorial reviewA dependable orientation record for establishing vocabulary, names and a first evidence trail. The current 204-word lead offers orientation but no explicit four-digit date, so chronology should not be assumed. The selected authority fields contribute no independent date. Its value is orientation rather than verdict, with HOn30, gauge and modelling providing the first useful test.
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A short description can identify a subject without explaining its stakes. For “HOn30 gauge”, the useful work is to connect “modelling of narrow-gauge railways” to the records capable of establishing context and consequence.

Evidence profile

The citation trail is more important than the brevity of the summary: it shows where individual claims can be examined in context. The source revision retrieved here is dated May 12, 2026. The linked authority identifier is Q5635537. None of the 0 selected statements returned an explicit reference.

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The absence of detail may reflect summary conventions rather than a lack of surviving documentation. The source lead contains qualifying language; that uncertainty should survive quotation, summary and reuse. Authority statements aid reconciliation but still require their own references, qualifiers and ranks to be checked.

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Source & attribution

This entry incorporates text from HOn30 gauge” on English Wikipedia. Contributors are listed in the page history. Text is available under the Creative Commons Attribution-ShareAlike 4.0 License. Selected authority identifiers and statements are retrieved from Wikidata under CC0; their references and qualifiers remain part of the verification path.