What measurement technique is used for restoring a lost Section Corner inside a township?

The technique employed in restoring a lost Section Corner inside a township is Double Proportionate Measurement. This method is specifically designed to establish the position of a lost corner by making measurements from two or more known points. By using the distance and angles from these reference points, surveyors can accurately determine the lost corner's location based on proportional relationships.

In the context of land surveying, especially in the Public Land Survey System (PLSS) used in the United States, the Double Proportionate Measurement relies on the principle that if you know the distances between established points and the relative positions of those points, you can infer the position of the lost corner. This process helps to maintain the integrity of section lines and ensure proper land division within the township, reflecting the original intent for property boundaries as established by the foundational surveys.

The other measurement techniques have different applications and may not appropriately address the specific need for restoring lost corners within a township framework. Single Proportionate Measurement would typically involve one known point, which may not provide the necessary accuracy for lost corners. Triangulation Measurement, while useful in different surveying contexts, doesn't specifically focus on section corners, and Fixed Reference Measurement lacks the necessary flexibility to restore a lost point based on proportions derived from multiple references.