Keeping your scope perfectly aligned is critical to long-range accuracy.  Canting your scope, even just a couple of degrees, can cause error in point of impact. With modern "Drop-Compensating" scopes, The Wheeler Anti-Cant Indicator, Pic Rail 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. Attaches securely to any Pic Rail and is tunable with the precision leveling set screw.

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 any Pic Rail and aligns with precision leveling set screw 
• Folds in when not in use
• Precision machined aluminum with anodized finish