Angular Tolerance in Arcmin

2D plans Layout
1

Hello

I'm drawing an optical filter in SolidWorks 2023.
It is a simple cylinder of Ø20mm and 1mm thick.
In terms of 3D modeling, it's fine. I get by.

On the other hand, in terms of the drawing, I'm drying :sweat_smile:

In optics, it is customary to tolerate the parallelism between the two faces in arcminute.

In mechanics, a parallelism of X defines a tolerance zone between two planes distant from Xmm. So not an angle.

I can use an angular tolerance, but the geometric tolerance framework doesn't allow me to put anything other than numbers in the range.

Is there a way to display/change the unit within the range of a geometric tolerance and override this " numeric input only " rule?
In this case, I would just like to add a '

tolang

2

Hello

It seems to me that this limitation has been raised several times.
It will be answered with SW 2026 with which it will be possible to add symbols in the geometric tolerance framework.

3

Hello;

I do not think that this is possible at the present time.
The " least worst " would be, without a doubt, to create a " bloc " for yourself.

4

Hello
Just add an ' after the <DIM> in the dimension text of its properties to see it on the dimension. No?

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6

It is indeed just possible to enter just numerical values.
By clicking on the + symbol you can add annotations that are not framed but that will be associated with the geometric tolerance.
Why not put a location in relation to A?

Tolerance zone = two parallel planes separated by a value t.
The face (or midplane) should remain in this area.

1 Like
7

I admit that I don't really understand the fact of tolerating a // with arcmin. It's contradictory for me... not made to go together!

The tilt seems like a good idea.

Personally, I'll add a note somewhere to stipulate that the tilt tolerances are in arcmin since it's not something usual

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8

And as a stupid question... but you have to work according to a standard that is recalled on your MEP. It doesn't specify your work units? Maybe that's more than enough?

9

Thank you for your answers.

@Silver_Surfer : Do you have a link with the future developments brought by the SW 2026?

@Sylk : It would be possible on a dimensional dimension, but unfortunately not in a geometric tolerance framework

@coin37coin : That's the problem, optical manufacturers are not mechanics, and they express parallelism in arcmin. In desperation, I did add a footnote to indicate the parallelism, but I was looking for a more " ISO " way to indicate it on the map.

In short, while waiting for SW2026, I only have the block or footnote solution left.

Thank you

10

They have only been published very recently:
Welcome to SOLIDWORKS 2026 - 2026 - What's New in SOLIDWORKS

Note: SW now includes new features in each SP (I'm not a fan of this method: we don't have a really stable SP anymore), so this list will grow with each SP release.

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11

Here is the new feature you are interested in:
Specifying Text and Symbols in Geometric Tolerance Symbol Ranges - 2026 - What's New in SOLIDWORKS

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12

It smells like the SP5.0 is not stable at all, this story of new features in the SPs.
:sob:

Already the 5.0 are not necessarily great on all releases. …

13

Unfortunately when I see the latest SP5 2023 and previous, there were already many buggers left.