Editing OO gauge (section)

==See also==
===Other model railway scales===
* [[Rail transport modelling scales]]

===Related scales===
*[[OO9]] – Used for modelling {{RailGauge|2ft}} narrow gauge railways in 4&nbsp;mm scale, often paired with OO scale layouts.
*[[OOn3]] – Used for ms in 4&nbsp;mm scale
*[[HO scale|HO]] – 3.5&nbsp;mm scale using the same {{RailGauge|16.5 mm}} gauge track as OO.
*EM – 4&nbsp;mm scale using {{RailGauge|18.2 mm}} track.
*P4 – A set of standards using {{RailGauge|18.83 mm}} gauge track (accurate scale standard gauge track).
*00-SF – Uses {{RailGauge|16.2 mm}} track with ordinary OO wheelsets. Allows the tighter trackwork tolerances of EM without the need to re-gauge wheels.

===Manufacturers===
*Accurascale – A relatively new manufacturer founded in 2015 producing UK and Irish locomotives and rolling stock.<ref>{{Cite web |title=accurascale about us |url=https://www.accurascale.com/pages/accurascale-about |access-date=2024-12-25 |website=Accurascale |language=en}}</ref>
*[[Airfix]] – Bought the Kitmaster range and sold it under the Airfix brand until the original Airfix company collapsed in 1981. Some of the tooling was then destroyed, but Dapol (q.v.) bought the remainder. Most Airfix military vehicles are also to 1:76 scale.
*[[Bachmann Branchline]] – One of the largest manufacturers of ready-to-run OO.
*[[Dapol]] – Produce kits (using the Kitmaster toolings bought from Airfix) and ready-to-run engines and rolling stock.
*[[Hattons Model Railways]] – A former model railway retailer that also produced ready to run OO models. The model toolings were sold off to Rails of Sheffield and Accurascale when they closed down in 2024.<ref>{{Cite web |last=Samuelson |first=Kate |date=2016-01-21 |title=Hatton's Model Railways moves out of Smithdown Road after 70 years |url=https://www.liverpoolecho.co.uk/news/liverpool-news/hattons-model-railways-moves-out-10767754 |access-date=2024-12-29 |website=Liverpool Echo |language=en}}</ref>
*[[Heljan]] – A semi-major player in the business, less notable than other companies though.
*[[Hornby Railways|Hornby]] – One of the largest manufacturers of ready-to-run OO. Originally known as 'Hornby Railways'
*[[Kitmaster]] – Manufactured plastic model kits of railway engines, rolling stock, and buildings.
*[[Lima (models)|Lima]] – Produced budget OO ready-to-run, bought by Hornby.
*[[Peco (model railways)|Peco]] – Produce a wide range of track, kits, and other accessories.
*Rapido Trains UK – A subsidiary brand of the Canadian Rapido Trains Inc. specializing in UK model trains.<ref>{{Cite web |title=About Rapido Trains – Rapido Trains UK |url=https://rapidotrains.co.uk/about-rapido-trains/ |access-date=2024-12-29 |language=en-GB}}</ref>
*Sonic Models – A relatively new manufacturer that makes OO and N Gauge models.<ref>{{Cite web |title=About – SONIC MODELS |url=https://sonicmodels.com/elements/pages/about/ |access-date=2024-12-29 |language=zh-HK}}</ref>
*[[Tri-ang Railways]] – A former manufacturer whose name was dropped when their parent company acquired the Hornby brand; they made models of locomotives and rolling stock.
*Planet Industrials – A new manufacturer in the business, known mostly for kits but has produced Ready to Run (RTR) versions of the [[Kerr, Stuart and Company]] 'Victory' class locomotive.<ref>{{Cite web |title=Planet Industrials |url=https://www.planetindustrials.co.uk/victory |access-date=2025-04-28 |website=Planet Industrials}}</ref>