Gage R&R study with different gage manufacturers

Hello,
I have a question presented to me by one of my team members and I would like to know if I answered him correctly.
"When grouping into families like we currently do for R&R’s can different manufacturers measuring the same characteristic and same range be in the same family?"
In other words, gage A from mfr X measures a diameter and gage B from mfr Y measures the same diameter, can the gages be grouped together or must all mfr X gages be grouped as one family and all mfr Y gages be grouped as another family?

My response was that all gages measuring the same characteristic withe same level of detail can be grouped together regardless of gage manufacturer because all of the same type of gage are traceable to a single calibration standard.

Agree? Disagree? Thoughts? Need more clarification?

 

Calibration is separate from R&R. I wouldn't group together gages from different manufacturers. If there were a performance difference between them, you'd want to know that wouldn't you?

 

For us non stats people, what would this look like?

 

I am agree with this, or provide more details. Also you can try to use Minitab or similar to find better way of gauging with\without grouping.