Land Surveyor in Training (LSIT) Practice Exam 2026 - Free Practice Questions and Study Guide

The reported local accuracy is an approximate average of the local accuracy values between this control point and other observed control points used to establish coordinates.

The area of the project boundary

Baseline distances to the base

Elevation differences to two benchmarks

Other observed control points used to establish the coordinates

Local accuracy shows how well a control point’s coordinates fit within the network by comparing it to the other points used to establish the coordinates. In practice, you look at the differences (residuals) between this point and each of the other observed control points in the network, assess the size of those differences, and then summarize them as an average. That average reflects how consistently this point aligns with the rest of the control points that were used to compute the coordinates. It’s not about the project boundary area, baseline distances to a base, or vertical elevation differences to benchmarks; those items relate to other aspects of surveying accuracy. The concept here centers on how the point ties into the network through its relationships with the other observed control points.