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Crain's Scale / Gauge Encyclopedia |
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C. 1993-2004
E. R. Crain All Rights
Reserved Updated 15 Apr 2003 email us |
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1 |
Scale Name: |
1:1 Scale |
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Scale Ratio: |
1:1 |
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Alternate
Names: |
Full Scale |
Full
Size |
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Scale |
Model
Track Gauge |
Error |
Track |
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Ser # |
Gauge |
Inches |
Ratio |
In/ft |
mm/ft |
Inches |
mm |
% |
Used |
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Correct Gauge: |
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1 |
1 |
9 Foot Ga |
108 |
1.0 |
12.0 |
305 |
108.0 |
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2743 |
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0 |
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1 |
2 |
100" Gauge |
100 |
1.0 |
12.0 |
305 |
100.0 |
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2540 |
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0 |
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1 |
3 |
97" Gauge |
97 |
1.0 |
12.0 |
305 |
97.0 |
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2464 |
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0 |
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1 |
4 |
8 Foot Ga |
96 |
1.0 |
12.0 |
305 |
96.0 |
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2438 |
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0 |
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1 |
5 |
88" Gauge |
88 |
1.0 |
12.0 |
305 |
88.0 |
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2235 |
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0 |
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1 |
6 |
86" Gauge |
86 |
1.0 |
12.0 |
305 |
86.0 |
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2184 |
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0 |
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1 |
7 |
84.5" Ga |
84.5 |
1.0 |
12.0 |
305 |
84.5 |
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2146 |
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0 |
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1 |
8 |
7 Foot Ga |
84 |
1.0 |
12.0 |
305 |
84.0 |
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2134 |
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0 |
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1 |
9 |
6 Foot Ga |
72 |
1.0 |
12.0 |
305 |
72.0 |
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1829 |
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0 |
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1 |
10 |
68.5" Ga |
68.5 |
1.0 |
12.0 |
305 |
68.5 |
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1740 |
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0 |
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1 |
11 |
5.5 Ft Ga |
66 |
1.0 |
12.0 |
305 |
66.0 |
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1676 |
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0 |
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1 |
12 |
65" Gauge |
65 |
1.0 |
12.0 |
305 |
65.0 |
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1651 |
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0 |
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1 |
13 |
63" Gauge |
63 |
1.0 |
12.0 |
305 |
63.0 |
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1600 |
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0 |
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1 |
14 |
5 Foot Ga |
60 |
1.0 |
12.0 |
305 |
60.0 |
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1524 |
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0 |
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1 |
15 |
1440 mm Ga |
56.7 |
1.0 |
12.0 |
305 |
56.7 |
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1440 |
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0 |
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1 |
16 |
1435 mm Ga |
56.7 |
1.0 |
12.0 |
305 |
56.7 |
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1435 |
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0 |
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1 |
17 |
4ft 8.5in Ga |
56.5 |
1.0 |
12.0 |
305 |
56.5 |
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1435 |
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0 |
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1 |
18 |
4 Foot Ga |
48 |
1.0 |
12.0 |
305 |
48.0 |
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1219 |
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0 |
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1 |
19 |
1200 mm Ga |
47.2 |
1.0 |
12.0 |
305 |
47.2 |
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1200 |
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0 |
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1 |
20 |
45.5" Ga |
45.5 |
1.0 |
12.0 |
305 |
45.5 |
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1156 |
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0 |
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1 |
21 |
44.5" Ga |
44.5 |
1.0 |
12.0 |
305 |
44.5 |
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1130 |
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0 |
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1 |
22 |
39.75" Ga |
39.8 |
1.0 |
12.0 |
305 |
39.8 |
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1010 |
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0 |
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1 |
23 |
Meter Ga |
39.4 |
1.0 |
12.0 |
305 |
39.4 |
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1000 |
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0 |
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1 |
24 |
950 mm Ga |
37.4 |
1.0 |
12.0 |
305 |
37.4 |
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950 |
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0 |
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1 |
25 |
3 Foot Ga |
36 |
1.0 |
12.0 |
305 |
36.0 |
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914 |
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0 |
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1 |
26 |
900 mm Ga |
35.4 |
1.0 |
12.0 |
305 |
35.4 |
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900 |
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0 |
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1 |
27 |
891 mm Ga |
35.1 |
1.0 |
12.0 |
305 |
35.1 |
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891 |
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0 |
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1 |
28 |
34" Gauge |
34 |
1.0 |
12.0 |
305 |
34.0 |
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864 |
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0 |
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1 |
29 |
825 mm Ga |
32.5 |
1.0 |
12.0 |
305 |
32.5 |
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825 |
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0 |
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1 |
30 |
800 mm Ga |
31.5 |
1.0 |
12.0 |
305 |
31.5 |
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800 |
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0 |
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1 |
31 |
2.5 Ft Ga |
30 |
1.0 |
12.0 |
305 |
30.0 |
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762 |
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0 |
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1 |
32 |
760 mm Ga |
29.9 |
1.0 |
12.0 |
305 |
29.9 |
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760 |
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0 |
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1 |
33 |
750 mm Ga |
29.5 |
1.0 |
12.0 |
305 |
29.5 |
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750 |
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0 |
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1 |
34 |
700 mm Ga |
27.6 |
1.0 |
12.0 |
305 |
27.6 |
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700 |
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0 |
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1 |
35 |
27" Gauge |
27 |
1.0 |
12.0 |
305 |
27.0 |
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686 |
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0 |
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1 |
36 |
620 mm Ga |
24.4 |
1.0 |
12.0 |
305 |
24.4 |
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620 |
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0 |
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1 |
37 |
2 Foot Ga |
24 |
1.0 |
12.0 |
305 |
24.0 |
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610 |
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0 |
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1 |
38 |
600 mm Ga |
23.6 |
1.0 |
12.0 |
305 |
23.6 |
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600 |
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0 |
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1 |
39 |
23.5" Ga |
23.5 |
1.0 |
12.0 |
305 |
23.5 |
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597 |
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0 |
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1 |
40 |
22" Ga |
22 |
1.0 |
12.0 |
305 |
22.0 |
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559 |
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0 |
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1 |
41 |
21" Gauge |
21 |
1.0 |
12.0 |
305 |
21.0 |
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533 |
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0 |
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1 |
42 |
18" Gauge |
18 |
1.0 |
12.0 |
305 |
18.0 |
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457 |
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0 |
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1 |
43 |
15" Gauge |
15 |
1.0 |
12.0 |
305 |
15.0 |
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381 |
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0 |
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1 |
44 |
9.5" Gauge |
9.5 |
1.0 |
12.0 |
305 |
9.5 |
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241 |
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0 |
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For
modeling purposes, many of these gauges are similar enough to be |
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considered
the same gauge. For example, 80 cm track is "close enough" to 2ft |
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6in (30 in) to be considered the same gauge for
modeling, especially in the |
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smaller
scales. Therefore 80 cm gauge is not shown separately in subsequent |
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tables.
Similarly 60 cm and 24 inch gauge are treated as equals for modeling |
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purposes. 42 inch gauge is also called Cape Gauge in
South Africa. |
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Crain's Scale
/ Gauge Encyclopedia |
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2 |
Scale Name: |
6 Inch Scale |
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Scale Ratio: |
1:2 |
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Alternate
Names: |
1/2 Scale |
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Half
Scale |
One
Half Full Size |
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Representednted |
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Scale |
Model
Track Gauge |
Error |
Track |
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Ser # |
Gauge |
Inches |
Ratio |
In/ft |
mm/ft |
Inches |
mm |
% |
Used |
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Correct Gauge: |
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2 |
45 |
4ft 8.5in |
56.5 |
2.0 |
6.0 |
152 |
28.25 |
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718 |
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0.0 |
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2 |
46 |
Meter |
39.4 |
2.0 |
6.0 |
152 |
19.70 |
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500 |
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0.0 |
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2 |
47 |
3 Foot |
36 |
2.0 |
6.0 |
152 |
18.00 |
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457 |
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0.0 |
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2 |
48 |
2.5 Foot |
30 |
2.0 |
6.0 |
152 |
15.00 |
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381 |
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0.0 |
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2 |
49 |
2 Foot |
24 |
2.0 |
6.0 |
152 |
12.00 |
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305 |
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0.0 |
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Commonly Used
Gauges |
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2 |
50 |
29" Gauge |
56.5 |
2.0 |
6.0 |
152 |
29.00 |
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737 |
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2.7 |
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2 |
51 |
28" Gauge |
56.5 |
2.0 |
6.0 |
152 |
28.00 |
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711 |
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-0.9 |
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2 |
52 |
27" Gauge |
56.5 |
2.0 |
6.0 |
152 |
27.00 |
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686 |
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-4.4 |
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2 |
53 |
19" Gauge |
36 |
2.0 |
6.0 |
152 |
19.00 |
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483 |
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5.6 |
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2 |
54 |
18.5" Gauge |
36 |
2.0 |
6.0 |
152 |
18.50 |
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470 |
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2.8 |
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2 |
55 |
6"n3 Gauge |
36 |
2.0 |
6.0 |
152 |
18.00 |
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457 |
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0.0 |
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2 |
56 |
18" Gauge |
36 |
2.0 |
6.0 |
152 |
18.00 |
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457 |
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0.0 |
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2 |
57 |
16" Gauge |
36 |
2.0 |
6.0 |
152 |
16.00 |
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406 |
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-11.1 |
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2 |
58 |
6"n2.5 Ga |
30 |
2.0 |
6.0 |
152 |
15.00 |
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381 |
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0.0 |
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2 |
59 |
15" Gauge |
30 |
2.0 |
6.0 |
152 |
15.00 |
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381 |
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0.0 |
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2 |
60 |
14" Gauge |
30 |
2.0 |
6.0 |
152 |
14.00 |
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356 |
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-6.7 |
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2 |
61 |
12 5/8" Ga |
24 |
2.0 |
6.0 |
152 |
12.63 |
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321 |
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5.2 |
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2 |
62 |
12 1/4" Ga |
24 |
2.0 |
6.0 |
152 |
12.25 |
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311 |
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2.1 |
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2 |
63 |
6"n2 Ga |
24 |
2.0 |
6.0 |
152 |
12.00 |
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305 |
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0.0 |
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2 |
64 |
12" Gauge |
24 |
2.0 |
6.0 |
152 |
12.00 |
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305 |
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0.0 |
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These
scales are not often used by modelers, but some full or half size mockups are |
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used
to illustrate new products, or are set up in museums, advertisements, movies, |
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or
parades. A model manufacturer recently built a full size model of one of its
G |
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scale
models, which itself was a model of a full size original. Thus, they created |
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a 22.5
to 1 scale ratio. |
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Crain's Scale
/ Gauge Encyclopedia |
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3 |
Scale Name: |
5 Inch Scale |
2.40 |
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