The Drawing to 3D PDF command is capable of taking entities "at elevation" out to a "3D PDF" that can then be opened and oriented isometrically with a standard PDF viewer such as Adobe Acrobat Reader.
Select entities for 3DPDF.
<Select entities>: Select the
entities that should be written to the 3D PDF file.
Pulldown Menu Location(s):
PDF
Keyboard Command: dwg2pdf3d
Prerequisite: Entities in a drawing.