What aspect of the locking collar does the swage gauge measure, in addition to the length of the lockbolt pin?

The swage gauge is designed to measure the diameter of the locking collar in addition to the length of the lockbolt pin. When a lockbolt is installed, the locking collar is swaged or deformed to fit tightly against the material being fastened. Ensuring that the diameter of the locking collar is within specific tolerances is crucial for maintaining the integrity and strength of the joint. If the diameter is too large or too small, it can affect how well the lockbolt holds the materials together, which could result in a failure of the assembly.

Other aspects such as thickness, width, or height are not the focus of the swage gauge. While these dimensions might be relevant in other contexts, they do not directly relate to the performance and functionality of the locking collar in this specific application. The emphasis of the swage gauge on diameter allows for accurate assessment of the fitting characteristics of the locking collar, ensuring effective fastening.