How many points on the swage gauge are used to inspect the lockbolt installation?

The use of a swage gauge in inspecting lockbolt installations is critical for ensuring the integrity and safety of the assembly. The correct answer indicates that two points on the swage gauge are utilized during this inspection process. This is because these two points help to measure specific aspects of the lockbolt installation, such as the swaging height and diameter, which determine whether the lockbolt has been installed correctly and securely.

Using two points allows for a more accurate assessment by providing a reference for comparison against the manufacturer's specifications. Proper inspection ensures that the lockbolt is not only tightened adequately but also that it meets the proper standards for reliability in structural applications, which is essential in aerospace manufacturing and assembly. By focusing on these two critical measurement points, technicians can better identify any potential flaws or issues with the lockbolt installation.