What is the primary purpose of a framing square in carpentry?

The primary purpose of a framing square in carpentry is to check and mark right angles, which is essential for ensuring that structures are square and level. This tool is crucial in layout work, allowing carpenters to draw lines and measure angles accurately. When constructing buildings or projects, having precise right angles is fundamental for stability and structural integrity. The framing square's L-shaped design makes it ideal for marking 90-degree angles on materials like wood, helping to create accurate corners and ensure that other components align correctly. This precision is vital in framing walls, laying out roofs, and setting foundations, which all require accurate measurements to maintain the overall quality of the work.