963 



HYDROGRAPHIC MANUAL 



Page 884 



Table 40. — Map scales and equivalents 



(The term "scale" as used in the formulas at the bottom of the table is the reciprocal of the fractional scale.) 



Fractional scale 



500 



600 



1,000 



1,200 



1,500 



2,000 



2,400 



2,500 



3,000 



3,600 



4,000 



4,800 



5,000 



6,000 



7,000 



7,200 



7,920 



8,000 



8,400 



9,000 



9,600 



10,000..-. 

 10,800.... 

 12,000.... 

 13,200.... 

 14,400.-.. 

 15,000.... 

 15,600.... 

 15,840.... 

 16,000.... 

 16,800.... 

 18,000.... 

 19.200.... 

 20,000.... 

 20,400.-.. 

 21,120.... 

 21,600.... 

 22,800..., 

 24,000.... 

 25,000-... 

 31,680.... 

 40,000.... 

 48,000.... 

 62,500.... 

 63,360.... 

 80,000.... 

 96,000.... 

 120,000... 

 125,000... 

 126,720... 

 250,000... 

 253,440... 

 500,000... 

 1,000,000. 



Formulas. 



Feet per in. 



41. 667 

 50.00 

 83. 333 

 100. 00 

 125. 00 

 166. 667 

 200. 00 

 208. 333 

 250. 00 

 300. 00 

 333. 333 

 400.00 

 416. 667 

 500. 00 

 583. 333 

 600.00 

 660.00 

 666. 667 

 700.00 

 750. 00 

 800. 00 

 833. 333 

 900.00 

 1, 000. 00 

 1, 100. 00 

 1, 200. 00 

 1, 250. 00 

 1, 300. 00 

 1, 320. 00 

 1, 333. 333 

 1, 400. 00 

 1, 500. 00 

 1, 600. 00 

 1, 666. 667 

 1, 700. 00 



1, 760. 00 

 1,800.00 

 1,900.00 

 2, 000. 00 

 2, 083. 333 



2, 640. 00 



3, 333. 333 

 4, 000. 00 

 5, 208. 333 



5, 280. 00 



6, 666. 667 

 8, 000. 00 



10, 000. 00 

 10, 416. 667 

 10, 560. 00 

 20, 833. 333 

 21,120.00 

 41, 666. 667 

 83, 333. 333 



In. per 

 1,000 ft. 



Scale 

 12 



24.00 

 20.00 

 12.00 

 10.00 

 8.00 

 6.00 

 5.00 

 4.80 

 4.00 

 3.333 

 3.00 

 2.50 

 2.40 

 2.00 

 1.714 

 1.667 

 1.515 

 1.500 

 1.429 

 1.333 

 1.250 

 1.200 

 1.111 

 1.0 

 0.909 

 0.833 

 0.80 

 0.769 

 0.758 

 0.750 

 0.714 

 0.667 

 0.625 

 0.60 

 0.588 

 0.568 

 0.556 

 0.526 

 0.50 

 0.480 

 0. 379 

 0.30 

 0.250 

 0.192 

 0.189 

 0.150 

 0.125 

 0.10 

 0.096 

 0.095 

 0.048 

 0.047 

 0.024 

 0.012 



Inches per 

 stat. mile 



126. 72 

 105. 60 

 63.36 

 52.80 

 42.24 

 31.68 

 26.40 

 25. 344 

 21.12 

 17.60 

 15.84 

 13.20 

 12. 672 

 10.56 

 9.051 

 8.80 

 8.00 

 7.92 

 7.543 

 7.04 

 6.60 

 6.336 

 5.867 

 5.280 

 4.800 

 4.400 

 4.224 

 4.062 

 4.00 

 3.96 

 3.771 

 3.52 

 3.30 

 3.168 

 3.106 

 3.00 

 2.933 

 ■ 2.779 

 2.640 

 2.534 

 2.000 

 1.584 

 1.320 

 1.014 

 1.000 

 0.792 

 0.660 

 0.528 

 0.507 

 0.500 

 0.253 

 0.250 

 0.127 

 0.063 



63, 360 

 Scale 



Stat, miles 

 per in. 



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 

 0.500 

 0. 631 

 0.758 

 0.986 

 1.000 

 1.263 

 1.515 

 1.894 

 1.973 

 2.00 

 3.946 

 4.00 

 7.891 

 15. 783 



Scale 

 63,360 



Meters per 



12. 700 



15.240 



25. 400 



30.480 



38. 100 



50. 800 



60. 960 



63. 500 



76.200 



91. 440 



101. 600 



121. 920 



127. 000 



152.400 



177. 800 

 182. 880 

 201. 168 

 203. 200 

 213. 360 

 228. 600 

 243. 840 



254. 000 

 274. 321 



304. 801 

 335. 281 

 365. 761 

 381.001 

 396. 241 

 402. 337 

 406. 401 

 426. 721 

 457. 201 

 487. 681 



508. 001 

 518. 161 



. 536.449 



548. 641 



579. 121 



609. 601 



635. 001 



804. 674 



1, 016. 002 



1, 219. 202 



1, 587. 503 



1,609.347 



2, 032. 004 



2, 438. 405 



3, 048. 006 



3, 175. 006 



3, 218. 694 



6, 350. 012 



6, 437. 389 



12, 700. 025 



25, 400. 050 



Ft. per in. X 

 0. 3048006 



Acres per sq. 



0. 0399 

 0. 0574 

 0. 1594 

 0. 2296 

 0. 3587 

 0. 6377 

 0.9183 

 0. 9964 

 1.4348 

 2. 0661 



2. 5508 

 3. 6731 



3. 9856 

 5. 7392 

 7.8117 

 8. 2645 



10.00 

 10.203 

 11.249 

 12.913 

 14. 692 

 15. 942 

 18. 595 

 22. 957 

 27. 778 

 33. 058 

 35. 870 

 38. 797 

 40.000 

 40. 812 

 44.995 

 51. 653 

 58. 770 

 63. 769 

 66. 345 

 71.111 

 74. 380 

 82. 874 

 91. 827 

 99. 639 

 160. 000 

 255. 076 

 367. 309 

 622. 744 

 640.00 

 1, 020. 304 



1, 469. 24 

 2, 295. 684 



2, 490. 98 

 2, 560. 00 

 9, 963. 907 



10, 240. 00 

 39, 855. 627 

 159, 422. 508 



(Scale) 8 

 43, 560 X 144 



Sq. in. per 

 acre 



25.091 

 17. 424 

 6.274 

 4.356 

 2.788 

 1. 568 

 1.089 

 1.004 

 0.697 

 0.484 

 0.392 

 0.272 

 0.251 

 0.174 

 0.128 

 0.121 

 0.100 

 0.098 

 0.089 

 0.077 

 0.068 

 0.063 

 0.054 

 0.044 

 0.036 

 0.030 

 0.028 

 0.026 

 0.025 

 0.025 

 0.022 

 0.019 

 0.017 

 0.016 

 0.015 

 0.014 

 0.013 

 0.012 

 0.011 

 0.010 

 0.006 

 0.004 

 0.003 

 0. 0016 

 0. 0016 

 0. 0010 

 0.0007 

 0.0004 

 0. 0004 

 0. 0004 

 0.0001 

 0.0001 

 0.125 

 0.562 



43, 560 X 144 

 (Scale) 2 



Sq. stat. mi. 

 per sq. inch 



0.00006 

 0. 00009 

 0. 00025 

 0. 00036 

 0. 00056 

 0. 00100 

 0.0014 

 0.0016 

 0.0022 

 0. 0032 

 0.0040 

 0. 0057 

 0.0062 

 0.0090 

 0.0122 

 0. 0129 

 0. 0156 

 0. 0159 

 0. 0176 

 0.0202 

 0.0230 

 0. 0249 

 0. 0291 

 0. 0359 

 0. 0434 

 0. 0517 

 0.0560 

 0.0606 

 0. 0625 

 0. 0638 

 0. 0703 

 0. 0807 

 0. 0918 

 0. 0996 

 0. 1037 

 0.1111 

 0. 1162 

 0.1295 

 0. 1435 

 0. 1557 

 0.2500 

 0. 3986 

 0. 5739 

 0. 9730 

 1.0000 

 1.5942 

 2.2957 

 3. 5870 

 3. 8922 

 4.00 

 15. 5686 

 16.00 

 62. 2744 

 249. 0977 



(Ft. per in.) ' 



(5,280) 



