Hi Martin,
We have created a sample in which we have achieved your requirement to have the progressive non-linear scale for the radial gauge with axis labels similar to the provided screenshot and attached it below for reference.
Regarding this query, "I have not figured out to make the spacing between the steps progressive as well"
We regret to inform you that currently we don’t have any feasible workaround to provide non-linear spacing between the axis labels.
Regards,
Sriram Kiran
Attachment:
f178639_a0fceb4f.zip