Inconsistency measuring circular surfaces.

[HughesTooling]

I noticed trying to measure the height difference between circular parallel faces you get different types of measurement depending on if the face in on a boss or in a hole.

Here's a few examples.

Between the bottom faces of 2 holes you get a pretty useless minimum distance.

But between 2 bosses, again pretty useless distance and minimum distance but you do the the option for XYZ delta. This is only useful if the faces are parallel to the document origin planes, rotate the part and all dimensions are useless!

What would be useful is the distance between the planar faces like you get is one of the circular faces has a hole in it.

Screencast shows some of the differences, example file attached.

Mark

[jeff_strater]

@HughesTooling - I do get the delta XYZ for the bottom of the hole as well as the top of the boss:

I would have been very surprised to see that they were different - that would have implied some pretty advanced topology analysis to treat them differently.

However, your points about if the body is rotated are certainly accurate, and a problem.

And yes, there are lots of inconsistencies and bad workflows in Measure.  I certainly hope to address them one day.  No promises when, however...

[HughesTooling]

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@jeff_strater wrote:

@HughesTooling - I do get the delta XYZ for the bottom of the hole as well as the top of the boss:

I would have been very surprised to see that they were different - that would have implied some pretty advanced topology analysis to treat them differently.

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You're right, I didn't notice one of the holes had a drill point not a flat bottom. I think the last update might have improved thing as well, I tried to measure between the top of 2 bosses a few weeks ago and only got a minimum distance but when I tried the same design now I get the XYZ delta option.

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@jeff_strater wrote:

However, your points about if the body is rotated are certainly accurate, and a problem.

And yes, there are lots of inconsistencies and bad workflows in Measure.  I certainly hope to address them one day.  No promises when, however...

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In another CAD system I've used you had the option to project the XYZ deltas to a plane giving just an XY dimension, this was useful for rotated parts.

Mark