Improve final GR&R value by taking average of more measurements?

G

garbagex

#11
Out of curiosity, what are trying to measure?

Not the product...the attribute...
Is it Length? Thickness? Viscosity? Tensile strength?

There are a lot of folks here with a lot of knowledge about gages that work well for various attributes.
Sorry for the late reply as I was out of town...
The measurement tool under study is a scanner, the variable is the position of lines on paper indicating quality of printing. As mentioned by others here, the resolution of the scanner is very high so repeated scanning can be considered, the painful part is the long scanning time though.
 
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Ninja

Looking for Reality
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#12
The measurement tool under study is a scanner,
Be careful in your viewpoint: You are not studying the scanner. You are studying the test method which involves the scanner. If you think about it a while, you'll see that there is a very big difference between these things.

Consider the needs of the print quality (is the need based on average print quality, or that no two lines are farther apart than ___, or no two lines are closer together than ___ )

Printing advertising materials may be quality of presentation which could be on average...or averaged within a region of the print then measured in a few regions (top is clear but bottom is smudged kind of stuff)

Printing finger electrodes for capacitors or shorting sensors would require both min and max distance and CANNOT be averaged without downstream consequences.

Again, it is not the scanner you are after, but the results of your test method when using the scanner.
"No one can get good data from a bad tool, but anyone can get bad data from a good tool" You are measuring the resulting data which includes both the tool and its use.

HTH
 
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