Update after modifications

As I noted in my last post several parts were too wide or too small, I've changed most of them now and as for every change the parts become more accurate.
I also added the cable, or as it may turn out to be -the steel flex conduit.

I finnally found the right size and shape for the ear piece front wedge nut!
It's an M8 easyfix nut but with semi-rounded top. I suspect the propmaker put the nut on a lathe and added a more visible radius to a standard nut. ;)

Screenshot detail from Doctor Who Episode "Kill the Moon"