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Line Blocks

Corner blocks used with mason's string to maintain straight, level courses during masonry construction. These L-shaped devices hook onto the corners of walls and hold a taut string line that serves as a guide for laying subsequent courses. They ensure consistent height and alignment across the entire length of a wall, improving both speed and accuracy of construction.

Related Keywords

line blocks
mason's string
course alignment
masonry guides

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Part of our comprehensive masonry glossary