I have an eccentric wheel which I believe is just about perfect for the 10x SS PM me an address and I'll send one out to you. The lower magnifications (coupled with my old eyes) have a hard time giving really distinct focal changes out past about 40 yards. I think that is mostly me though. If you'd rather one of the others in the picture just let me know in the PM. All you'll owe me is a list of complaints.
Thank you, sir. That is good to know. I don't believe I have ever looked into something with higher magnification than 16x that was not on a tripod. It is very difficult for sure.