Readings between different units

[Cosmoe615]

What would be acceptable difference in readings done by different machines and operators.

 

[Cosmoe615]

I contacted Taylor Hobson because that's who we bought the unit I'm using from and they said 2% if same operator using both units and everything else is exactly the same and 5% if operators are using the same units, spec and trace.
So I wondering how much it would be for different units, I know our other labs they don't even make it anymore.

 

[M4C7]

Running a search for Gage R&R might be useful.

For example, here is a handy introduction to the subject (complete with a link to a spreadsheet)

http://www.dmaictools.com/dmaic-measure/grr

 

[Cosmoe615]

Thanks for the feed back.

 

[DeleteriousPhases]

You haven't specified what unit or test, Cosmoe615.

 

[Cosmoe615]

My lab is using a Taylor Hoboson S-116 not sure what the supplier of our parts is using.

 

[DeleteriousPhases]

So it's a roughness testing unit?

 

[Cosmoe615]

Yes, the S-116 a smaller type unit for measuring surface finishes about the size LxW of a kindle