Changing GTOL secondary unit rounding

[ChampiCo]

What I want to display: 0.1 [.004]

I have gtol_secondary_value_precision set to round, dual_dimensioning set to metric[imperial], and gtols set to ANSI standards.

The problem is that no matter what I try, the secondary unit won't round up. If it is set to 0.100 it shows [0.0039] but when I put 0.10 it shows [0.003] instead of rounding up. 

[Chris3]

Creo doesn't round the secondary units. This is done intentionally to avoid the secondary (reference) annotation from having more tolerance than the primary (driving) annotation.

[ChampiCo]

I recognize that is why Creo doesn't do it by default, however I am asking if it is possible to make it round the secondary units anyways. 

In this application a one-thousandths difference in inches is important, where 0.004 is much more acceptable than 0.003. I recognize that the secondary units are just for reference, but in America some smaller manufacturers will only look at the imperial units because it is what they are familiar with. 

[BenLoosli · Accepted solution]

I don't think it will possible. It is not just a PTC coding thing, put it is in the standards that define dimensioning. You cannot have a looser tolerance for the secondary units than you have for the primary units. Other CAD software has this same 'restriction' on dual dimensioning.

[Chris3]

If you really wanted to I am sure you could display it with the rounded number. For instance, you could create a custom symbol that looked like the GTOL with two parameters in it one in the English units and one that is being driven by a relation that converts the secondary number into metric. Aside from making a custom symbol and using relations though there is no way to force Creo to change the way it does this calculation.

[Chris3]

For anyone coming back to this there is a dtl option for MBD (not drawings) that allows you to round. It is:

gtol_secondary_value_precision

https://support.ptc.com/help/creo/creo_pma/r10.0/usascii/index.html#page/model-based_definition/detail_options_specific_to_3d_mode_21.html 

[BenLoosli]

Even with that setting, the secondary tolerance values will not be greater than the primary tolerance values.