What from?

[Gumba143]

Round part tractor? Automobile? Found in a field in Minnesota added photos, threaded connecting screw one one end, open on other with small blades in only two of the holes.

 

[trdking]

Looks like the foot off a work bench to me

 

[Back-of-the-boat]

Looks like an old horn or siren.

 

[trdking]

Looks like an old horn or siren.

I think you are right!

 

[Gumba143]

Looks like an old horn or siren.

Thanks, you may be on to something, small fitting in back could be for the handle on siren, looking into it...

 

[Hawks88]

I agree with back of the boat. Old siren. Nice find.

 

[Gumba143]

I agree with back of the boat. Old siren. Nice find.

Thanks for the help, I'm looking in the direction of a hand crank, air raid, police or fire siren

 

[Gumba143]

All cleaned up, cut side off to see inside. Tiny overlapping pieces for the siren tone, spinning wheel. I wonder how old it is?