WHEELER ANTI CANT INDICATOR 30MM - SKU: WH-ACI30 Keeping your scope perfectly aligned is critical to long-range accuracy and the Wheeler Anti-Cant Indicator is a pivotal tool for ensuring your rifles accuracy. Canting your scope, even just a couple of degrees, can cause error in point of impact. With modern "Drop-Compensating" scopes, an Anti-Cant Indicator is a necessity. If your gun isn"t aligned correctly, dialing up the turrets, or using hold-over marks, will just throw your shot off. This error can easily be enough to cause misses. The Wheeler Anti-Cant Indicator ensures that your rifle is always held near perfectly vertical, eliminating any chance for "Cant Error" to cause a miss. Features: Indicates precise, repeatable level gun position Increases accuracy by insuring proper gun alignment, which is critical for turret adjustment and hold over for bullet drop compensation Easy-to-view from shooting position Attaches to scope, folds flat onto the side of the scope when not in use Precision machined aluminium with anodized finish Available for 1 inch, 30mm and 34mm tube scopes