Can someone tell me what this is? new photo added

[David Rase]

I acquired 4 of these things last week and don't have a clue what they are for.  They are brass, about 2 1/2" long.  I thought they might be some kind of capping device.  The inside diameter of the outer tube is slightly larger than a #11 cap so it will not hold a cap snuggly.  The outer tube slides back and forth about 1/8".  Any Ideas?
David

[Daryl]

Does the knurled end screw off?
Do they all have the same ID?
I see the screw on the side slides fore and aft about 3/16"?
Thus, the brass inner piece moves fore and aft that amount.
I see no 'value' of these devices for the shooting vocation, either modern or not.

[P.W.Berkuta]

It looks like something to seat percussion caps on revolver nipples instead of using a wood dowel?

[Bigmon]

Not knowing the size, I would guess "pin vice?

[Austin]

Suppositories for a brass monkey 🤷

[bigsmoke]

Somebody with a lathe that didn't have anything else to do?
Nice work, anyway.

[Dale Halterman]

Is the knurled part attached to the outer tube? Is the small knob next to the knurled part an extension of the inner tube/rod?

If so, it seems that the knurled part could be used to hold the device against something and the knob could be pressed or stuck to make an indentation. For what purpose, I haven't a clue.

Dale H

[David Rase]

The outer tube slides back and forth.  It also slides up underneath the brass knob about 3/16".  The knurled knob is affixed to the inner rod.  I agree with Paul that it has something to do with capping.  I also agree with Daryl that there is no shooting value added. 

[Daryl]

It looks like something to seat percussion caps on revolver nipples instead of using a wood dowel?

This seems the only plausible use.

[B.Barker]

Dave, that's a thinga-ma-bob.

[Marcruger]

It looks like a pin someone would use to lock an adjustable table leg by passing through holes.  Or adjusting a lawn mower handle.  I know I am wrong, but that is what comes to mind.  Do we know it has anything to do with shooting? 

[Bob Gerard]

I remember watching episodes of This Old House, where Tom Silva would ask Steve and whomever to try and guess what something strange was. There were some really creative and imaginative answers. None, of course, were correct 😂

[Daryl]

Dave, that's a thinga-ma-bob.

Or perhaps just a do-hicky.

[Bob Roller]

Dave, that's a thinga-ma-bob.

No,it's a kanibblin widget,late model.
Bob Roller

[john bohan]

what is this thing on youtube will identify it for you in his quizz videos. send him a picture. We like to figure out what some of the items are he shows.

[snapper]

you can take a picture of it with your phone in the google app.   The app will search the net for a similar item and identify if for you.

My sister prices items for a thrift store.    Just open google, take a picture and it finds comparables for you.

good luck

fleener