The "blank" I'm referring to is the scope on my new .22 airgun. Eyes aren't so great anymore, so I finally took it to a gun dealer, He fixed it right fast. Now I can hit anything at 50' with less than a 1" pattern for 4 shots. In all fairness I did read the instructions. And I never owned anything with a scope on it before. Don't laugh till soda comes out your nose.