Grid Corrections

By superimposing a rectangular grid on the earth surface, a grid built from exact square miles, the spherical deviations have to be fixed. After all, the grid has only two dimensions. The north-south boundaries in the grid are on the lines of longitude, which converge to the north. The roads that follow these boundaries must dogleg every twenty-four miles to counter the diminishing distances.

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3 Responses:

  1. J. Peterson says:

    The backstory on Grid Corrections is interesting.

  2. db48x says:

    Interesting videos, but wow, the sound is annoying. Mute it first.

  3. apm74 says:

    Thanks, Public Land Survey System!

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