Found this at known 1775 shipwreck beach ??

[T Hunter]

Need your help trying to id this . I will clean it more Just thought someone might have an idea . It about 5 inches long . Thanks Mark

 

Amazon Forum Fav 👍

Upgraded Night Vision Monocular Digital Infrared Monocular Telescope for 100% Darkness with 8X Zoom - Grab it through Amazon!

[AKiwi]

Glass, metal? Bottle neck? No idea really

 

[taz42o]

Part of a aluminum ladder rung thats been in a fire.

 

[BioProfessor]

Based on the ribbing, I would say it is a swivel head flashlight.

Daryl

 

[Coin Stalker]

I am going to have to agree with taz I went out and looked at my ladder and it is almost identical to the piece you have.....