The 7mm Narrow Gauge Association aims to encourage the modelling of
narrow gauge railways at a scale of or around 7mm to 1 foot (1:43)

7mm Scale Drawings by Geoff Thorne


Bagnall 0-4-0T (Margaret Class)

Bagnall 0-4-2T Works No. 2895 (WHR)

Beyer Peacock 0-4-2T Glyn (GVT)

British Guiana Railway 'Toastrack' Coach

Clogher Valley Railway 0-4-2T

Clogher Valley Railway 1st Class Coach

Clogher Valley Railway Composite Coach

Clogher Valley Railway Open wagon

County Donegal Railway Diesel Railcars Nos.7& 8

Decauville 0-6-0T c1914 French WD

German Field Railways 0-8-0T circa 1914

Glyn Valley Tramway 'Glyn' - Beyer Peacock 0-4-2T

Glyn Valley Tramway 4 Wheel Van c1894

Hudson 27 cu ft Side Tip Wagon c1930

Hunslet 'Wagonmaster' 4 Wheel Diesel

Joan - Kerr Stuart 0-6-2T (W&LLR)

Kelani Valley Railway (Ceylon) 0-4-2T

Kelani Valley Railway (Ceylon) Bogie Coaches

Kerr Stuart 0-6-2T - W&LLR 'Joan'

Monarch - W&LLR Bagnall 0-4-4-0T Works No.3024

MR Simplex WD 40hp Petrol Loco 1942

Sentinel 80hp Geared Industrial Type

Sharp Stewart 0-4-2T Works No.4822

(Clogher Valley Railway)

Simplex 40hp Motorail c1942 WD

W&L Light Railway Bagnall 0-4-4-0T

Works No.3024 (Monarch)

W&L Light Railway Kerr Stuart 0-6-2T (Joan)

W&L Light Railway Steel Bogie Coach


The subject matter of this booklet has been derived purely from personal choice. Several of the drawings, such as those of "MONARCH" and the Bagnall saddle tank are favourites that I have long wanted to draw. Some have been included because I happened to have the particular works drawing available, whilst others have been included to keep a reasonable balance. I hope that most people will find something of interest to them in the pages that follow.

The previous two booklets in this series, Narrow Lines Extras Nos. 1* and 2 have shown a slight bias towards the narrower gauges, say those below 2ft 6ins. In this issue an attempt has been made to include a selection of stock running on gauges up to one metre.

It is perhaps useful to include a few notes on the actual reproduction of the drawings. The originals have all been drawn to scales considerably larger than 7mm/ft, the exact ratio being determined by the size and complexity of the prototype. Great care has been taken to ensure that the final copy will be produced to the correct scale, however paper is a notoriously unstable substance. The final copy will be accurate as it comes, warm and dry, from the printing machine. Subsequent changes in temperature and humidity may cause measurable dimensional changes in the sheets. In all cases the width of the drawing between the borders should measure exactly 275mm when the scale drawing is exactly 7mm/ft, i.e. a ratio of 1:43.543.

Most of the drawings in this booklet have been produced from the original manufacturers’ general arrangement drawings. Quite often these are quite unsuitable for use directly in modelling. They are mostly composed of cut away sections, with very little in the way of fixing bolts or rivets shown on them. Detail such as the position and size of spectacle glasses has to be derived from close scrutiny of photographs, as indeed do the placing of rivets, etc.

This explains why many drawings intended for modellers’ use have good detail of the sides and ends yet are very sparse in detail on the plan view. Photographers just do not seem to take many shots from above!

Several of the prototypes contain details that the available drawings and photographs do not show properly. In these cases drawings omit these details. Should you be contemplating making a model of a particular prototype then it would be advantageous to obtain as many photographs as possible. It is just impossible to show all the detail clearly on drawings to 7mm/ft.


After having been out of print for many years, this Extra has been reprinted to meet the demand from many members of the Association. The Introduction and Description of prototypes have been reset, but are otherwise exactly as written by Geoff Thorne many years ago. Similarly the drawings are exactly as he drew them. A new cover has been provided to match the style of the whole Narrow Lines Extra series.

* Narrow Lines Extra number 1 is no longer in print.

Contents of publication contains examples from, Clogher Valley Railway, County Donegal Railway, Bord Na Mona, Ministry of Munitions – Air Board, Simplex Motorail, Hudson, Cliffe Hill Granite Quarry, British Guiana Railway, Sentinel, Welshpool & Llanfair Light Railway, Commission Francaise des Munitions, German Field Railways, Strassenbahn Breskens - Maldeghem, Glyn Valley Tramway, and the Kelani Valley Tramway.

© 1996 Geoff Thorne & The 7mm Narrow Gauge Association.All rights reserved. No part of this work may be reproduced in any form by electronic or mechanical means, including xerography or its imitators and photocopying, without the written permission of the copyright owners.

NARROW LINES EXTRA No.3 was prepared for publication by Geoff Thorne and published by The 7mm Narrow Gauge Association.

Reprinted 1996 in a limited edition

The cover photograph of 'Joan' is reproduced by courtesy of the Editor of the Journal of the Welshpool & Llanfair Light Railway Preservation Co. Ltd.

Any sales enquiries to The 7mm Narrow Gauge Association should be sent to the address listed on the main Association Sales page of this site.

ISBN No: Not applicable to this publication. Order Code: NLE03