Found on ocean shore small, heavy rod covered in charcoal

[Deborah24]

I found this at the beach this morning. It weighs 13.5 ounces, is 6 inches long and 3/4 inches in diameter. Magnets do stick to it. What is interesting are the two notches at each end. It is not smooth but almost hammered looking. It was covered in charcoal that easily chipped off and has permanently discolored my hands.

Any ideas?

 

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[digging440yrs]

Might be whats left of an old jack knife---

 

[4x4x4]

.....or possibly an old carbon(decade) resistor from a ship power plant ?

 

[Deborah24]

I doubt that.

Might be whats left of an old jack knife---View attachment 1463257

Hey digging440yrs, I don't think that is it. It is a cylinder shape with no slots for the blades.

 

[digging440yrs]

you may need to add something for a size ref.-----good luck, tom

 

[P.ALLEN]

Maybe a rope divider for a small monohull boat, they would put those..mainly wooden...in between ropes to keep from tangling