Here is a weird situation.
Dynamo claims to be without units and that they read numbers from Revit as they are.
I have a simple family for which I have added some parameters. When defining a parameter for a family you can select what type of parameter it is and then you can select it to be length, area. force, etc.
In my case I have defined a length parameter and it shows up in properties palette as mm.
My project units is also in mm. However, once I extract this parameter in dynamo it converts it feet!!!
How do you explain this?