I have several lines, rectangles etc in a layout within ArcGIS Pro 2.3.3 and I am setting up a new layout in the same project.
In my original layout all the units were in mm, I don't recall changing any settings to make this happen, I assume these were how the units are to begin with.
I am now creating another layout, but when i customize my elements in this new layout the settings are all in cm, and I have no idea why.
I am wanting to make these uniform, and use mm in both.
I found in the settings this page, I have set to mm, but this has had no effect:
Can someone please point me to the setting I am looking for??