the american practical navigator table 5 natural numeric chart scales
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TABLE 5
Natural and Numerical Chart Scales
Miles Per Inch
Natural
Scale
1:500
1:600
1:1,000
1:1,200
1:1,500
1:2,000
1:2,400
1:2,500
1:3,000
1:3,600
1:4,000
1:4,800
1:5,000
1:6,000
1:7,000
1:7,200
1:7,920
1:8,000
1:8,400
1:9,000
1:9,600
1:10,000
1:10,800
1:12,000
1:13,200
1:14,400
1:15,000
1:15,600
1:15,840
1:16,000
1:16,800
1:18,000
1:19,200
1:20,000
1:20,400
1:21,120
1:21,600
1:22,800
1:24,000
1:25,000
1:40,000
1:48,000
1:50,000
1:62,500
1:63,360
1:75,000
1:80,000
1:100,000
1:125,000
1:200,000
1:250,000
1:400,000
1:500,000
1:750,000
1:1,000,000
FORMULAS
Inches Per Mile
Nautical
Statute
Nautical
Statute
0.007
0.008
0.014
0.016
0.021
0.027
0.033
0.034
0.041
0.049
0.055
0.066
0.069
0.082
0.096
0.099
0.109
0.110
0.115
0.123
0.132
0.137
0.148
0.165
0.181
0.197
0.206
0.214
0.217
0.219
0.230
0.247
0.263
0.274
0.280
0.290
0.296
0.313
0.329
0.343
0.549
0.658
0.686
0.857
0.869
1.029
1.097
1.371
1.714
2.743
3.429
5.486
6.857
10.286
13.715
0.008
0.009
0.016
0.019
0.024
0.032
0.038
0.039
0.047
0.057
0.063
0.076
0.079
0.095
0.110
0.114
0.125
0.126
0.133
0.142
0.152
0.158
0.170
0.189
0.208
0.227
0.237
0.246
0.250
0.253
0.265
0.284
0.303
0.316
0.322
0.333
0.341
0.360
0.379
0.395
0.631
0.758
0.789
0.986
1.000
1.184
1.263
1.578
1.973
3.157
3.946
6.313
7.891
11.837
15.783
145.83
121.52
72.91
60.76
48.61
36.46
30.38
29.17
24.30
20.25
18.23
15.19
14.58
12.15
10.42
10.13
9.21
9.11
8.68
8.10
7.60
7.29
6.75
6.08
5.52
5.06
4.86
4.67
4.60
4.56
4.34
4.05
3.80
3.65
3.57
3.45
3.38
3.20
3.04
2.92
1.82
1.52
1.46
1.17
1.15
0.97
0.91
0.73
0.58
0.36
0.29
0.18
0.15
0.10
0.07
126.72
105.60
63.36
52.80
42.24
31.68
26.40
25.34
21.12
17.60
15.84
13.20
12.67
10.56
9.05
8.80
8.00
7.92
7.54
7.04
6.60
6.34
5.87
5.28
4.80
4.40
4.22
4.06
4.00
3.96
3.77
3.52
3.30
3.17
3.11
3.00
2.93
2.78
2.64
2.53
1.58
1.32
1.27
1.01
1.00
0.85
0.79
0.63
0.51
0.32
0.25
0.16
0.13
0.08
0.06
Feet
Per Inch
41.67
50.00
83.33
100.00
125.00
166.67
200.00
208.33
250.00
300.00
333.33
400.00
416.67
500.00
583.33
600.00
660.00
666.67
700.00
750.00
800.00
833.33
900.00
1,000.00
1,100.00
1,200.00
1,250.00
1,300.00
1,320.00
1,333.33
1,400.00
1,500.00
1,600.00
1,666.67
1,700.00
1,760.00
1,800.00
1,900.00
2,000.00
2,083.33
3,333.33
4,000.00
4,166.67
5,208.33
5,280.00
6,250.00
6,666.67
8,333.33
10,416.67
16,666.67
20,833.33
33,333.33
41,666.67
62,500.00
83,333.33
SCALE
72,913.39
SCALE
63,360
72,913.39
SCALE
63,360
SCALE
SCALE
12
