Arc Reactor Size?

I have printed a 3d model I found online and I was wondering if anyone could give me the rough size of the actual prop. The prop I downloaded has a face radius of 55mm which is fine (actually it is a little bit too small for my liking but I can live with that) and a depth of 110mm which just seems far too long. I'm not bothered about it being accurate it just needs to feel right in my hands.

*not my image but the image of the model uploader.


*image from movie (from wiki)

 

Update:

*Face

*Wire and coils

*Old Base