sighter

A sighter is a device or mark used to assist in aiming. In various contexts, a sighter serves to establish a point of reference for a user to align their vision or a weapon with a target. The specific form and function of a sighter can vary greatly depending on its application.

In firearms, a sighter is often a temporary adjustment or aiming point used during the initial sighting-in process of a rifle scope or other aiming device. When a new scope is mounted or a rifle is first fired, the user may need to adjust the scope's turrets to bring the point of impact onto the point of aim. The sighter allows for a quick initial alignment, often by using a specific type of ammunition or a designated sighting target. This process ensures that the aiming device is roughly on target before making finer adjustments.

Beyond firearms, the term "sighter" can also refer to aiming marks in archery or other projectile-based activities. In some optical instruments, a sighter might be a visible reticle or crosshair that helps the user precisely target an object. The core principle remains the same: providing a clear and consistent reference point for accurate aiming. The term emphasizes the act of "sighting" or observing a target with the intent to hit it.