Could you tell me what's it?

[roundg]

I don't where should I put the thread. It's not a leica lens but something made by leica.

Pls view the attached pic, the black tube on the right in the back row.


Anyone can tell me what's it?

The mark says, E. Leitz Wetzlar, Germany, just a trademark. The slim side looks like a ocular, another side has a big glass and a bayonet (must
be wrong spell.sorry can't get the right word) to connect to some device.

Is it used for a film projector? or ?

Someone can give me a clue?

Thanks,

 

[roundg]

sorry, pic is here

 

[Mazurka]

Looks like a magnifying finder to be used in place of the prism on a Visoflex.

 

[MadMan2k]

I was going to say I wonder if it's some kind of loupe, but Mazurka's most likely right.

 

[roundg]

Thank Mazurka and MadMan2k for helping me narrow the scope. I guess I got the answer:

Leica lVFOO Magnifier 4 Leitz Visoflex I & C