What tool is typically used to make basic measurements and mark lines?

The tool commonly used to make basic measurements and mark lines is the speed square. This triangular tool is primarily designed for marking and checking angles, particularly 90 and 45 degrees, which is crucial in woodworking and framing. Its flat edge can be placed against the edge of a board to draw straight lines quickly, while also helping to ensure that cuts and joints are square.

In addition, the speed square can assist in measuring distances along the edge of a board, making it invaluable for ensuring precision in layout work. This combination of functions allows carpenters to efficiently mark lines for cutting, laying out rafters, and other tasks where precise angles and straight lines are essential.

While other tools mentioned can be used for measurements and marking, they serve different primary purposes. For example, a tape measure is utilized for taking direct length measurements, a level ensures surfaces are horizontal or vertical, and a chalk line is used for marking longer, straight lines over distances. Each of these tools has its own specialized use, but in the context of marking lines and angles in woodworking, the speed square stands out as particularly versatile.