Newlon’s machined aluminum replacement cap has a built-in bubble level to help you increase the potential accuracy of your handgun or rifle by ensuring the firearm is level before you pull the trigger. Fits all standard Leupold turret knobs except those on Target scopes and the Mark 4 series. Just a quick glance at the bubble lets you know you’re on the level, without compromising your cheekweld. Hardcoat anodized in a choice of three finishes to match your scope’s finish. Includes rubber alignment/seal rings. 1" outside diameter; 7⁄10" tall.
Sinclair, Issue:4A, Page:209