Gage R&R question

[gdntnovice]

When performing a gage R&R for a profile of a surface, if I have 70 points around a surface, do you perform a gge r&r for every point (70 times) or do you get an average or min/max type of calculation and then yo use that to estimate the overall gage r&r of that profile of surface.

Thanks

[Matthew D. Hoedeman]

individual points only. If you use the "profile" values, the 'high' point or 'low' point will change. You have to compare apples to apples not apples to apple pie.

[dwade]

You can also use MIN/MAX but using the individual points pulled from the actual scan that is used would work as well.