[Ri...] Posted October 27, 2022 Share Posted October 27, 2022 When qualifying a CAA stylus it uses one Sigma and one Radius value for the stylus sphere. Why does a List stylus have separate Sigma's and Radius values for the same stylus sphere? The sphere radius doesn't change. Link to comment https://qualityforum.zeiss.com/topic/9290-caa-vs-list-qualifications/ Share on other sites More sharing options...
[To...] Posted October 27, 2022 Share Posted October 27, 2022 Would it be variations in machine performance? Link to comment https://qualityforum.zeiss.com/topic/9290-caa-vs-list-qualifications/#findComment-42874 Share on other sites More sharing options...
[Ri...] Posted October 28, 2022 Author Share Posted October 28, 2022 If that is the case, then how does a CAA qualification work if it avoids variations in machine performance? Link to comment https://qualityforum.zeiss.com/topic/9290-caa-vs-list-qualifications/#findComment-42876 Share on other sites More sharing options...
[To...] Posted October 28, 2022 Share Posted October 28, 2022 Please sign in to view this quote. I don’t think it does. If it did, wouldn’t we always get the same results? There’s always a certain amount of uncertainty in our measurements. We just have to figure out how much uncertainty we can live with, right? Link to comment https://qualityforum.zeiss.com/topic/9290-caa-vs-list-qualifications/#findComment-42878 Share on other sites More sharing options...
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