For meshes: Upper left panel, click on file --> import --> Wavefront (.obj) --> Select obj from file path If you want to do it more precisely, set the pivot point to Bounding Box Center; move the 3D ...

these scripts are tested in blender 2.81 and 2.83 on Ubuntu 20.04, please modify local filepaths in the scripts below if you are working in windows The following three scenarios are covered below ...