Hmm, thanks. I'll check back with them. I get the feeling that's not it but who knows; they may have confused certain things about the film (and we all know how easily that can happen).
There were so many medieval/renaissance era torture films of the late 60s/70s that would take a long while to sift through. Maybe there was a pendulum scene in The Devils or Mark Of The Devil.. can't remember.
Not the Devils, if we are talking about the same film. There's a lot going on in the film. Some of which is still hard to find in any form of the film, but . . .?! There's no pendulum scene that I can recollect. Maybe Mark of the Devil, which I have never seen.