Describe the function of a mason's line in masonry work.

A mason's line plays a crucial role in ensuring that masonry work is executed with precision regarding levels and alignments. This thin, strong string is stretched between markers such as stakes or corner blocks to serve as a guide for the placement of bricks, blocks, or stones. By providing a straight edge to follow, the mason can maintain consistent horizontal and vertical aligns throughout the construction, ensuring that walls and structures are plumb and true.

Using a mason's line helps avoid misalignment that can lead to structural issues or aesthetic concerns later in the project. Proper alignment further assists in keeping the mortar joints uniform, contributing to both the durability and appearance of the masonry work. Therefore, its function is integral to achieving a well-structured and visually appealing result in masonry construction.