I don't have the Qt dev stuff installed, so I can only edit slcr-prefs.ui manually which is a bit of a pain. Assuming you have it installed, please add the 2 settings for degrees and millimeters (see TODO comment in SlcrDoc.py). The 2 have the exact same meaning as in the Tesselate dialog of the Mesh workbench.
I don't have the Qt dev stuff installed, so I can only edit slcr-prefs.ui manually which is a bit of a pain. Assuming you have it installed, please add the 2 settings for degrees and millimeters (see TODO comment in SlcrDoc.py). The 2 have the exact same meaning as in the Tesselate dialog of the Mesh workbench.