What is the function of stops on an extension ladder?

The function of stops on an extension ladder is to prevent overextension. These stops are crucial safety features that ensure the ladder does not extend beyond its designed limits, which could lead to instability or failure of the ladder. By stopping the extension at a predetermined point, these stops help maintain the structural integrity of the ladder and ensure that it remains safe to use while providing adequate reach for the firefighter. This feature is particularly important in emergency situations where maximizing safety is paramount, as it prevents the risk of the ladder collapsing or becoming unmanageable if extended too far. Maintaining control over the ladder's extension is critical for safe operations in firefighting contexts.