Guidelines for Measurement System Acceptability
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According to the Automobile Industry Action Group (AIAG) [1], you can determine whether your measurement system is acceptable using the following guidelines.

If the Total Gage R&R percentage in the %Study Var column (% Tolerance, %Process) is:

·    Less than 10% - the measurement system is acceptable.

·    Between 10% and 30% - the measurement system is acceptable depending on the application, the cost of the measuring device, cost of repair, or other factors.

·    Greater than 30% - the measurement system is unacceptable and should be improved.

If you are looking at the %Contribution column, the corresponding standards are:

·    Less than 1% - the measurement system is acceptable.

·    Between 1% and 9% - the measurement system is acceptable depending on the application, the cost of the measuring device, cost of repair, or other factors.

·    Greater than 9% - the measurement system is unacceptable and should be improved.