**Gage R&R - How-to Guide and Excel Template | DMAICTools.com**
https://www.dmaictools.com/dmaic-measure/msa/gage-rr

The overall Gage R&R is normally expressed as a percentage of the tolerance for the CTQ being studied, and a value of 20% Gage R&R or less is considered acceptable in most cases. Example: for a 4.20mm to 4.22mm specification (0.02 total tolerance) on a shaft diameter, an acceptable Gage R&R value would be 20 percent of 0.02mm (0.004mm) or less. form

The overall** Gage R&R** is normally expressed as a percentage of the tolerance for the CTQ being studied, and a value of 20%** Gage R&R** or less is considered acceptable in most cases. Example: for a 4.20mm to 4.22mm specification (0.02 total tolerance) on a shaft diameter, an acceptable** Gage R&R** value would be 20 percent of 0.02mm (0.004mm) or less.

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