Alan
I have two optivisors for about ten years. I think one may be a 1.5 and the other is 2X. I have the extra magnification loupe on one of them. However, I can't say that I have tried using them while running the lathe. My depth perception seems to get a little off while using them or reading glasses for that matter so I am a bit afraid to use them around rotating equipment. What I have been using though is some safety glasses that I got from McMaster Carr that have a magnifier at the bottom of the lens. That way I can look through the normal portion of the lens while the lathe is running then I can use the magnifier for up close inspection without switching to the optivisor. While it's not as good as the optivisor for fine work, it's a decent compromise for me. I will try to see what focal length the visors have if I get some time this evening.
I have two optivisors for about ten years. I think one may be a 1.5 and the other is 2X. I have the extra magnification loupe on one of them. However, I can't say that I have tried using them while running the lathe. My depth perception seems to get a little off while using them or reading glasses for that matter so I am a bit afraid to use them around rotating equipment. What I have been using though is some safety glasses that I got from McMaster Carr that have a magnifier at the bottom of the lens. That way I can look through the normal portion of the lens while the lathe is running then I can use the magnifier for up close inspection without switching to the optivisor. While it's not as good as the optivisor for fine work, it's a decent compromise for me. I will try to see what focal length the visors have if I get some time this evening.