chalk line
Quick Summary
A chalk line is a tool used in construction and other trades to mark straight lines on surfaces. It consists of a cord that is rubbed with chalk. When stretched taut between two points and then plucked or snapped against a surface, the cord deposits a chalk line. This technique, known as \"snapping a line,\" has ancient origins, with evidence of its use in ancient Egypt. While ancient Egyptians used wet red or yellow ochre, modern craftspeople use chalks, following methods employed by Greek masons. The chalk line serves as a guide for tasks such as cement work or marking boards.12
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