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2 different size qualification spheres and 3 different tip sizes in one program.

I am running 2021.2. I have a program that uses 3 different tip sizes (2mmx50mm,1mmx50mm and 0.5mmx10mm) and 2 different size qualification spheres (1" sphere for the 1 and 2mm tips and 8mm sphere for 0.5mm tip). I am having issues with false measurements due to i think the way I am calibrating the 0.5mm tip. I only use the 0.5mm for 4 circles with diameters of .043". My question is " how should i go about calibrating these tips correctly for this program. Thanks in advance.