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I have run Gage R&R's for 15 years and have always used a 3 operator/2 measurements or 2 operator/3 measurements method. I know we can use a 3/3 method too, but I have never seen a 2/2 method used until a supplier recently sent us a study using this method. My question is, is this legitimate? I can't find anything anywhere that states that the studies can be run using this method.