muqarnas solid model. real world size.
SLDPRT (SolidWorks, filesize: 23.1 MB), BLEND (Blender, filesize: 7.91 MB), OBJ (OBJ, filesize: 5.47 MB), FBX (Autodesk FBX, filesize: 9.5 MB), MAX (Autodesk 3ds Max, filesize: 23 MB), STP (STEP, filesize: 22.4 MB)