Page:Handbook of Meteorology.djvu/270

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Table 1—Miscellaneous Equivalents

Linear Equivalents

1 mile =320 rods
  =1760 yards
=5280 ft
=63360 in
=1.60935 kilometers
1 rod =0.003125 mi
  =16.5 ft.
=198.0 in
=5.0292 meters
1 yard =0.000568 mi
  =0.9144 meter
1 foot =0.3333 yd
  =0.000189 mi
=0.3048 meter
1 inch =1000 mils
  =0.08333 ft
=0.02777 yd
=2.54 centimeters
1 mil =0.001 in
  =0.0254 millimeter
1 fathom =6 ft
  =1.8288 meter
1 nautical mile =6080.27 ft US
  =1.1516 stat mi US
=6080 ft Br Ad
=1.1515 stat mi
1 statute mile =0.8684 naut mi US
1 geographical mile =0°1′ at equator
  =6087.15 ft
=1.1528 stat mi
1 nautical mi Br Ad
1 nautical mi Br  =1853.248 meters
1 geographical mi (U S)
  =1855.345 meters

1 chain (engineers)
1 chain (engin  =100 ft
=6.0606 rods
=1.5157 Gunter’s chain
=30.48 meters
1 Gunter’s chain =66 ft
  =4 rods
=0.66 chain
=0.0125 mi
=20.1168 meters
1 link =7. 92 in
1 kilometer =0.62137 mi
  =198.8384 rods
=1093.61 yds
=3280.83 ft
1 meter =39.37 in
  =3.28083 ft
=1.09361 yds
1 centimeter =0.3937 in
  =0.032808 ft
1 millimeter =0.03937 m
 
=39.37 mils
=1000 mikrons
1 mikron =0.001 mm


Square Equivalents

1 square mile =640 acres
  =102400 sq rd
=3,097,600 sq yd
=27,878,400 sq ft
=2.59 sq kilo
1 acre =160 sq rd
  =4840 sq yd
=43560 sq ft
=4046.87 sq meters
=0.0404687 hectare