Establishing a direct line of sight through brush and timber is referred to as?

Establishing a direct line of sight through brush and timber is accurately described as "brushing a line." This term refers to the specific practice of clearing vegetation in order to create a visual corridor or pathway. In surveying, having a clear line of sight is crucial for accurate measurements and observations, especially when determining elevations, angles, and distances between points. By brushing a line, surveyors ensure that their instruments can operate effectively without obstruction, which is vital for achieving reliable results.

While other terms may seem relevant, they do not convey the precise action of removing brush to establish a visual line. For example, "cutting a path" could imply broader actions that may not focus exclusively on establishing sightlines. "Clearing a view" is a more general phrase that doesn't specifically pertain to the surveying context. "Line of sight adjustment" suggests making changes after a line of sight is already established, rather than the active process of creating that sight line. Therefore, brushing a line is the most accurate term for this specific surveying activity.