Use this economical scope mounted level to ensure your reticle isn’t canted when shooting long range. Just a few degrees of cant will cause considerable shot dispersion at longer ranges! Proudly printed from durable nylon polymer, with a metal thread insert for bolting strength. Sized to sit just over the side-focus knob on almost all optics, but not stick out too far and snag on objects. Slim design installs quickly and without the need to remove your scope.