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2. Compass Rule
The Compass Rule (also known as the Bowditch Rule) applies a proportion of the closure error to each line.
For any line IJ, Figure E-3,
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| Figure E-3 Adjusted Latitude and Departure |
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Equations E-1 and E-2 |
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Equations E-3 and E-4 |
The Compass Rule distributes closure error based on the proportion of a line's length to the entire distance surveyed.