Originally Posted by Andy006
Cheers for that. I am amazed, a Bisley Scope enhancer does the same thing really, ie; makes sure you look through dead centre everytime and reduce paralax error. Are these banned too?
I used a scope maximiser and they still allowed room for the eye to be off axis. From what I can see with these, it allows you to judge that to a much more certain degree than an enhancer would on a low mag scope. Considering the tidbits passed on here about how to reduce pa error, I can see how these would be a technical advantage when combined. I think HFT is keen to make it about how you use the kit rather than what kit you have. For FT, with high mag and PA adjustment, as Jon says, I think they're probably unnecessary, unless you shoot SFT.