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

The primary purpose of a framing square in ironworking is to ensure accuracy in measurements and angles. This tool is essential for layout work, as it aids in marking right angles and checking the squareness of components being fabricated or assembled. By accurately using the framing square, ironworkers can create precise structures, which are crucial for the integrity and functionality of the final assembly.

In ironworking, maintaining correct angles is foundational for both safety and durability. Structures that are improperly squared can lead to misalignments and can compromise load distribution. The accuracy provided by the framing square directly influences the overall quality of the work, making it a vital tool in an ironworker's toolkit.

The other choices do not align with the fundamental function of a framing square. While welding techniques, lifting materials, and structural integrity are important aspects of ironworking, they do not pertain to the specific task of measuring and marking angles that the framing square is designed to address.