This handy, super-simple device helps ensure your scope’s crosshairs are properly indexed with the center of the bore so you’ll get the most accurate performance from your rifle and scope. The two-piece system easily attaches to the scope and uses a standard bubble level to indicate proper alignment. Works great for optics mounted on rifles, handguns, and shotguns, so whatever you’re shooting today, this tool will have you range-ready in seconds!
Mini-Catalogs, Issue:04, Page:007
Sinclair, Issue:3B, Page:212