ISO14405-2 example interpretation

[cervantes]

Hi

An extract from ISO14405-2 is attached. (Geometrical product specifications (GPS) -- Dimensional tolerancing -- Part 2: Dimensions other than linear sizes)

// ISO 14405-2:2011 illustrates the use of geometrical tolerancing for dimensions that are not linear sizes to avoid the ambiguity that the use of ± tolerances on these dimensions causes. Both linear and angular dimensions, except size of features of size, are covered.
Dimensional tolerancing can be indicated by ± tolerancing or geometrical tolerancing.
The ambiguity caused by using ± tolerances for dimensions other than linear sizes is explained in an informative annex. //


Is my way of understanding correct? since I open this standard I saw only examples where common zone surfaces were more or less in the same line (if you know what I mean)
not sure how to inteprete this correctly

thanks

 

[CheckerHater]

<CZ> parameter creates condition similar to "simultaneous requirement", meaning that both tolerance zones are behaving as one.

Other then that, the definition of position will stay the same, meaning 0.4 thick tolerance zone equally disposed about theoretical surface. (t/2 in both directions)

"For every expert there is an equal and opposite expert"
Arthur C. Clarke Profiles of the future

 

[cervantes]

Thanks, so it was simpler than I thought. I have tendency to go overboard with intepretations sometimes.