Mystery 4x5 camera part

[Graflex Garage]

Need help identifying this back to a 4x5 camera.
I bought this a couple weeks ago, it had a 4x5 graflex graflok back on it. But i have no idea what this part goes to.
Ive searched every way i can think of and came up with nothing


The square part is 7 1/4" 7 1/2"
The tube is 6 1/2" round


‐-----------------------
Update
I found it some sort of part to turn your enlarger into a copier

 

[Chuck1]

A picture would help

 

[Graflex Garage]

A picture would help

Fighting with my pc to load pics lol

 

[Graflex Garage]

Figured it out, It's some sort of part for a beseler enlarger

 

[glbeas]

It might be an adaptor to use the camera as an enlarger.

 

[MattKing]

It looks like an adaptor for an Ilford Multigrade light source.

 

[xkaes]

See if you can find a part #. As others have said, looks like an adapter for an enlarger -- maybe Beseler. Probably 4x5. The round part looks like the size of the condenser -- which it either fits onto or replaces. The other end could be for the enlarger light source/head, or a large format camera/film holder/etc.

 

[btaylor]

I had exactly that part combination a few years ago. The round part pictured fits a Beseler 4x5 enlarger. I was going to graft the Graflok to an old Crown Graphic I had but never got around to it. I also guessed the combo was some sort of contraption to turn an enlarger into a copy camera. Like yours it appeared unused.

 

[gordrob]

I am attaching pictures of a custom copy unit for the Beseler Enlarger. This particular one has the regular Graflok back and it has a fresnel lens in the viewing screen.

 

[Ian Grant]

That would probably fit my Johnson's V45 enlarger, with the condensers and light source removed. It was once quite common to use enlargers as copy cameras, they were very common here in the UK during WWII.

Ian

 

[Graflex Garage]

I am attaching pictures of a custom copy unit for the Beseler Enlarger. This particular one has the regular Graflok back and it has a fresnel lens in the viewing screen.

Yes exactly, This is how it originally came.
Thank you