Guess what this is a photo of!

[YT2095]

yeah the Bunsen flame adjust looks very similar, there Should be a hole in the side of it though, Maybe it`s not shown in the pic?

the other thing it looks similar to is a DPSS Laser housing.

 

[expatgirl]

an old-fashioned cookie cutter? Just kidding----

 

[phinz]

It is none of these.

 

[sage™]

is it for connecting some sort of hose to something?

 

[YT2095]

how about a TV antenna connector shroud? although the shadow underside looks a little like a TNC (half turn) type connector.

 

[pacanis]

Is it used to reflect light on a goniometer?
Or a brass Yatzee cup

 

[phinz]

None of these either. The light part was getting closest, kinda, but not really.

 

[qmax]

Fiber optic connector?

 

[Buck]

A brass dice cup.

 

[phinz]

It has nothing to do with any type of game or fiber optics.

 

[sage™]

tv cable connector?

 

[YT2095]

is it the eyepiece or objective lens from a microscope?

 

[pacanis]

Ack. I was just going to say objective lens...

Is it an antique camera lens (my second choice, since I haven't ran across an exact match yet)

 

[phinz]

No, no, no and no.

 

[YT2095]

how about the part that goes on the End of a telescope to stop Side light getting in and giving lens flare?

or some sort of Shell casing, although it`s missing a Rim that`s typical of most casings?

 

[sage™]

door peep hole??

 

[phinz]

It is none of these three.

Thar is really no further I can spin this, as it would just broaden the scope of what you're looking for and make you even more frustrated. YT... I'm really surprised you haven't gotten this one yet, given your predilection toward obscure scientific stuff.

 

[YT2095]

a Projector head perhaps off an epidiascope?

 

[phinz]

Nope. Not that either.

 

[sage™]

a very short brass pipe