Scale — Model railway
G scale
G scale
1:22.5
At 1:22.5 a person is 77.8 mm tall and a 19 m locomotive is 84.4 cm long. Everything below is drawn at 1:22.5, by an atelier that builds architectural models at the scales either side of it.
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Scale1:22.5
Subjectlocomotive, person
Grid1 cm on the model
DrawnAtelier AMOD
Sheet14 / 20
Person77.8 mm1.75 m
Track gauge45 mmbetween the rails
Carriage106.7 cm24 m long
Locomotive16 cm3.6 m tall
01Converter
Real size,
Real size,
1:22.5 size
For a whole building at every scale at once, use the scale calculator.
| Standard track gauge 1.44 m | 63.8 mm |
|---|---|
| A person 1.75 m | 77.8 mm |
| A locomotive, height 4 m | 17.8 cm |
| A signal 6 m | 26.7 cm |
| A locomotive, length 19 m | 84.4 cm |
| A carriage 24 m | 106.7 cm |
| 1 mm on the model | 2.2 cm |
|---|---|
| 1 cm on the model | 22.5 cm |
| 5 cm on the model | 1.12 m |
| 10 cm on the model | 2.25 m |
| 30 cm on the model | 6.75 m |
| 50 cm on the model | 11.25 m |
| 1 m on the model | 22.5 m |
02Garden railways
At 1:22.5
I
Track gauge
45 mm between the rails. At 1:22.5 that is metre-gauge track (1,000 mm), the narrow gauge of mountain and light railways; standard gauge at this scale would be 63.8 mm.
II
Where it is used
Garden railways, outdoors and in all weathers. The scale was introduced as LGB in 1968.
III
For architecture
1:22.5 sits between 1:20 and 1:25, the scales of interiors and museum pieces, where every brick and door handle is modelled.
03One figure, every scale
The same person
The same person
at every scale
Architecture
Model railway
04From the archive
Built near 1:22.5
The archive's models at 1:25, the architectural scale closest to 1:22.5.
05The scale rule
Every scale
Architecture ↑Model railway ↓
06Questions
On 1:22.5
What is the ratio of G scale?
G scale is 1:22.5. One millimetre on the model is 2.2 cm in reality and one centimetre is 22.5 cm. 45 mm between the rails. At 1:22.5 that is metre-gauge track (1,000 mm), the narrow gauge of mountain and light railways; standard gauge at this scale would be 63.8 mm.
How tall is a person in G scale?
A person 1.75 m tall is 77.8 mm in G scale, and a child of 1.2 m is 53.3 mm. A 4 m locomotive stands 17.8 cm above the rails.
How long is a train in G scale?
A 24 m passenger carriage is 106.7 cm and a 19 m locomotive 84.4 cm. A twelve-carriage train of 300 m would be 1333.3 cm.
Can G scale figures be used in an architectural model?
1:22.5 sits between 1:20 and 1:25, the scales of interiors and museum pieces, where every brick and door handle is modelled.
Your building, at 1:22.5, built by hand.