What is the function of the bezel ring on a compass?

The bezel ring on a compass has a crucial role in both functionality and usability. It contains the upper glass crystal, which protects the compass dial while allowing for visibility of the markings underneath. Moreover, the bezel ring is often designed to allow for adjustments, most commonly through a rotating mechanism that enables the user to set a specific heading or bearing. This feature is essential for navigation tasks, as it allows for quick recalibration and easy alignment of the compass to the user's desired direction, making the navigation process more accurate and efficient. Understanding this function helps users maximize the utility of their compasses, particularly in tactical situations where precise navigation is vital.