Model originally uploaded to Thingiverse at https://www.thingiverse.com/thing:2325640.

This is the Senate Guard Helmet from Revenge of the Sith.

I hope I'm getting better at sizing these helmets. This "should" fit an adult male head. Please check the pdf for measurements. The units are in millimeters. If you do print this out before me please let me know what scale fit your head.