Surveyors Measurements

1 Chain = 66'

1 Link = 0.66' or 7.92"

1- Rod = 16.50'

4-Rods = 1 Chain

100 Links = 1 Chain 

1  Acre = 43560 Sq. Ft.

1 Sq. Acre = 208.71 x 208.71

10 Sq Chains = 1 Acre - 66'x66'x10 = 43560 Sq. Ft.

5 Acres = 330 x 660'

1 Rod,Pole or Perch = 16.50'

1 Mile = 5280' or 1760 yds

1 Nautical mile = 6080'

1 Square mile = 640 Acres

1 Furlong = 660'

8 Furlongs = 1 mile

Circumference of Earth = 24,900 miles at the equator

Spherical circle of Earth = 360 degrees

1 Degree of arc in 1 mile = 92'

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