guide meridians

guide meridians

Lines placed every 24 miles in the public land survey system in order to correct for the earth's curvature.Meridian lines are imaginary lines running north and south.They cannot be parallel because the earth curves as it approaches the poles. As a result, they cannot be a uniform 6 miles apart,as they should be.The guide meridians correct for this.

References in periodicals archive ?
After the baseline and principle meridian were laid out, the standard parallels and guide meridians are measured and marked.
To maintain a standard-sized grid, the guide meridians are remeasured at each standard parallel.
Each 24 mile square area formed by a standard parallel and guide meridian was divided into 16 townships.
The north and south boundary will be the baseline or a standard parallel, and the east and west sides will be the principle meridian or a guide meridian.