Device with Unknown Purpose

Astrolabe, orrery, gyroscope...  many of us have heard the words.  Can you work them, or explain them?  This device, this does something different.  I knew what it was, just a moment ago, hold on...

materials:  

• titanium
• sterling silver
• bronze
• aluminum base
• paint

height x width x depth:   9.0 x 6.0 x 6.0"