Importing 3D models and units

[HanaSuckstorff]

Hi folks! I'm trying to import an OBJ file into ArcScene (local scene) in ArcPro version 2.7.1. I originally imported the OBJ mesh into SketchUp, where I set the unit at meters. I then exported the file as an OBJ and imported into ArcScene. As the basemap is in meters, a model in meters should be the proper size. But as you can see from the screenshot, it's much too small. What might account for this? How can I make this work?

[DanPatterson]

does the imported file have a defined coordinate system.

Your display units are in decimal degrees, what are your map units?  What is the coordinate system of the map?

[HanaSuckstorff]

Thanks for your response. I set the coordinate system of the OBJ at WGS_1984_Web_Mercator_Auxiliary_Sphere, which is the coordinate system of the map, when I imported it into ArcScene. The map units are whatever the standard units are for the ArcScene basemap. I did try fiddling with the OBJ in SketchUp using architectural units. When I imported this file into ArcScene, it was significantly too large.