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Line 57:
Line 57: + + + − − [[File:Drive-mechanisms-and-recovery_fig1.png|thumb|left|'''Figure 1.''' (a) official plat of township sectionized and numbered, with adjoining sections. (b) official plan of numbering congressional townships from meridians and baselines.]]
Land description and maps (view source)
Revision as of 18:09, 9 January 2014
, 18:09, 9 January 2014→US rectangular system
===US rectangular system===
===US rectangular system===
[[File:Drive-mechanisms-and-recovery_fig1.png|thumb|left|'''Figure 1.''' (a) official plat of township sectionized and numbered, with adjoining sections. (b) official plan of numbering congressional townships from meridians and baselines.]]
The rectangular survey system ... sets up what is known as "initial points," a position which is determined by accurate field astronomical methods. From these ... points, lines known as principal meridians and base lines are extended. The principal meridian line runs north and south conforming to the true meridian and extending from the initial point or monument. Regular township corners are established at intervals of 480 chains ([[distance::6 miles]]) along this line.
The rectangular survey system ... sets up what is known as "initial points," a position which is determined by accurate field astronomical methods. From these ... points, lines known as principal meridians and base lines are extended. The principal meridian line runs north and south conforming to the true meridian and extending from the initial point or monument. Regular township corners are established at intervals of 480 chains ([[distance::6 miles]]) along this line.
[[File:Drive-mechanisms-and-recovery_fig2.png|thumb|'''Figure 2.''' An acre section and its subdivision into smaller components.]]
[[File:Drive-mechanisms-and-recovery_fig2.png|thumb|'''Figure 2.''' An acre section and its subdivision into smaller components.]]