I'm looking for a scope turret/parallax pointer. I do not need an adjustable one. Something slim. 3D printed is ok to keep the $ down. Is there a U.S. retailer that has one - maybe similar to this:
Or this:
Or this:
A piece of old credit card pinched between halves of the scope ring works. As long as you want, angled to where you need it. Also a small brass nail with the pointed end blunted works. I have even used the "nail" of a pop rivet.