Vintage box with a cool mount

A gentleman that knew I was shooting precision pistol gave me this original Pachmyer box today. I intend to place my iron sight guns in it.
Can anyone identify this mount ?
Or possibly the original owner was tool maker, it has a bronze collet with a ball ended thumbscrew to tighten it. I am thinking some sort of pole with an adjustable mount ?

https://i.servimg.com/u/f62/19/64/86/35/img_2010.jpg

Looks like you could put your brass catcher in there

Appears to be a well crafted shop built mount. I've seen one similar mount at Perry with knurled knobs that the shooter built in their home machine shop.

Chris Miceli wrote:Looks like you could put your brass catcher in there

Maybe you could....leftie !

Pretty sure that is shop made. Nicely done too.

So no matter what I tried nothing came close to fitting, pipe, tube, rod.
So I was in the shop fitting a new NG scope to a new indoor box and for grins I took the tube mount out of the package and by God it fits and is telescopic !

OK, so now the next question for you experienced shooters. Why did they install this false wall in the lower section of this box ?
There is no rear door for access.
It is really making things cramped . Can I just knock it out without ruining all the covering ?

A relatively safe spot for the scope to sleep in front & a place to accumulate "essentials" in the back?