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Welcome to Gauge '3'


Welcome to the official website of the Gauge '3' Society. We are here to support and promote modelling in Gauge '3': Standard gauge scenic railways running on 2½ inch gauge track.


Amongst our membership we have collectors of vintage trains, those with high pressure live steam locomotives, garden railways with continuous circuits for fast steam running and those with smaller railways using 2-rail, battery or radio control. All are equally welcome in the Gauge 3 Society.

G3S Newsletter 137 Summer 2024 Front cover.jpg

The G3 Society 'Project' Loco is now in production.

The result of a colaboration between Society Members, the 'Project' kit consists of laser cut steel parts for the chassis, laser cut brass parts for the body with all other parts being 3D printed. Included in the kit are Slaters wheels & all fixings and materials to complete the engine.  A  PDF construction manual is available to purchasers and online support will be provided if required. Not included are the motor/gearbox and R/C equipment.  The model is based on a LSWR Adams G6 prototype but there were many variations & builders will be able to modify parts to suit their chosen design.

The cost of the kit to G3S Members is £600.00 + £10 P&P by FedEx.   Please register your interest here

LSWR Adams G6 Locomotive

Building & Running a Standard Gauge Railway in Your Garden  - New 'Welcome to Gauge 3' Book

Garden Railway Book

With over 80 A4 pages of advice and full colour photographs, this new high quality G3S publication is available to anyone interested in building and running standard gauge railways in their garden. Excellent value at just £9.00 (+ £3 UK P&P). Please use Contact to order

Contents include:

  • What is Gauge 3?

  • 2.5" Gauge and Gauge 3

  • Guidelines for Get Togethers

  • Gauge 3 Society Track Standards

  • So you want to lay some track?

  • Building a ground level railway

  • Taking the first steps

  • How to fit a Quart into Pint Pot

  • How the Railway came to Chalfont

  • Introduction to Civil Engineering

  • Indoor Layouts

  • Exhibition Layouts

  • Purchasing a Locomotive

  • Vintage Gauge 3

  • Live Steam safety

  • Coal Firing

  • Gas Firing Proprietary Locomotives

  • Meths Fired Locomotives

  • Intro to Electric Propulsion

  • Radio Control for Garden Railways

  • Troublesome Trucks to Gauge 3

  • Letter your own Private Wagons

  • Passenger Stock

  • Wagon Construction

Large Gauge 3 Portable Layout at National GTG

Metropolitan Tank Engine

Interested in Gauge 3? Have a read of a little history, and see how you can get involved.

The Gauge 3 Society Logo

If you're thinking of joining the Society, have a read of what we might be able to offer you.

Williams Models at AGM

Here you'll find links to traders who will have Gauge 3 items for sale.

A Garden Get-Together near Bedford
Live Steam Britannnia
Gauge 3 Indoor Modelling

The Gauge ‘3’ Society – A Company Incorporated in England & Wales with liability Limited by Guarantee. Company No. 08174106.

Registered Office: 28 Church Road, Barling Magna, Essex SS3 0LS       Email :

The Gauge '3' Society is not VAT registered and prices shown on this website are not subject to the addition of VAT.

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