Gauges

Understanding the Gauges
There are no frustrating regulations governing the world of railway modelling. From the nine sizes in popular use, you simply choose the gauge and scale best suited to your particular requirements. There aree two types, 'Standard' and 'Narrow' gauges. It must be explained that 'Standard' refers to a gauge of 4'-8.5", the yardstick from which broad and narrow gauges are defined. The gauges and scales are illustrated in the table below.

STANDARD GAUGE
GAUGE
SCALE
mm TO 1 ft
Z
6.5
1:203
1.5mm
N
9(British)
1:148
2.062mm
N
9(Overseas)
1:160
2mm
OO
16.5
1:76
4mm
HO
16.5
1:87
3.5mm
O
22
1:43.5
7mm
1
45
1:30
10mm
NARROW GAUGE
GAUGE
SCALE
mm TO 1 ft
N-16.5
6.5
1:148
2.062mm
OO-9
9
1:76
4mm
HO
12
1:87
3.5mm
O-16.5
16.5
1:43.5
7mm
SM-32
32
1:19
16mm
G-45
45
1:22.5
13.5mm

Understanding the GaugesThis table demonstrates the differences between the gauges in Standard and Narrow terms. The gauges available to purchase from Kittle Hobby stocks are those illustrated in the diagrams below...







'NARROW GAUGE' defines any gauge that is narrower than 'Standard', and the sizes may vary considerably. Possibly the best known lines are the 'Great Little Trains of Wales' which have examples of up to 1ft 11in (probably the most popular collection in Ffestiniog. The Talyllyn is 2ft 3in and there are even wider examples overseas.