If you have ever mounted your own rifle scope you know the difficultly in keeping it aligned so the crosshair lies parallel to the horizontal plane. The Segway Reticle Leveler will ensure you mount the scope so it isn’t canted to one side. The vertical crosshair should point down through the center of the bore, but if the scope is canted the gun will always be shooting from one side to the other. The problem is even more noticeable with long range shooting. Its simple design makes it easy to use and guarantees you align your scope’s reticle with your gun. For use when mounting scopes on rifles, handguns or shotguns.