Which technique involves visually aligning arms with a baseline to create a right angle?

The Swung-Arm Technique involves visually aligning arms with a baseline to create a right angle, which is fundamental in many surveying applications. In this technique, a surveyor uses their arms to establish a perpendicular line, facilitating precise measurements and positioning without the need for complex equipment.

This method is particularly useful in the field where quick, visual determinations of angles are necessary, allowing surveyors to create right angles that are crucial for layout and design work in construction and land surveying. By ensuring one arm aligns with the baseline while the other arm extends outward, the surveyor can effectively work with geometric principles to achieve an accurate right angle.

The other techniques listed each serve different purposes in surveying. For instance, the Surveyor's Level Method pertains to leveling and measuring vertical angles, while the Triangulation Method is concerned with establishing points based on the geometry of triangles. The Offset Measurement Technique involves measuring distances from a baseline to a point, which also does not specifically emphasize visually creating right angles in the way the Swung-Arm Technique does.