We have looked around and can't figure why in xactmeasure that almost all the surface profiles recently are reporting the same Min Max except one,is positive one negative.(ie. .0134 and -.0134)
We will have 2 of 8 that have diff values then the other 6 identical.
It's dependent on how the profile is dimensioned. A profile with no datum will typically show the same value ± because it's a form only callout allowing PCDmis to best fit the profile until the highest deviation equals the lowest. Similarly, a profile that is not locked to all 6 degrees of freedom is allowed to float in the unlocked degree of freedom and can shift to where the highest and lowest deviation becomes equal.