What adjustment method distributes error of closure over traverse in proportion to each leg's length?

The method that distributes the error of closure over a traverse in proportion to each leg's length is the Compass Rule. This technique is particularly useful in surveying when a closed traverse is considered, and there is an accumulation of error that needs to be addressed.

The Compass Rule adjusts the measured angles or distances of the traverse legs, allocating the total error based on the relative lengths of each leg. This means that longer legs bear a greater share of the error correction compared to shorter legs, reflecting the fact that errors tend to accumulate more over longer distances.

Utilizing the Compass Rule helps maintain a balance in the adjustments made, ensuring that the resulting values are not disproportionately impacted by any one segment of the traverse. This approach aligns with practical surveying processes, enabling a more accurate representation of the surveyed area.

In contrast, other methods like the Least Squares method provide a more statistical approach to error distribution and balance adjustments based on overall data fitting rather than individual leg lengths. Meanwhile, the Transit Rule and Crandall method are less commonly referenced and involve different principles of error distribution in surveying.