US Patent 10900747 Turret for rifle scopes

Elevation turrets are used in rifles copes to adjust the point of aim of in the vertical direction. In tactical riflescopes used for precise shooting at long distance, the shooter often adjusts the elevation turret via very small movements or ‘clicks’. Each click indicates a fine adjustment step, often ½ MOA or ¼ MOA (Minute of Arc). At night or under stressful field conditions, it is difficult for the shooter to see the click markings or remember whether the turret has been turned once or twice.