Brass, serrated (striated?) edge, some kind of adjusting wheel?

[parsonwalker]

Context: Found in a field where Colonial home stood. Has been farmed ever since so could be from any era. What in the heck is this?? The edges of the round "wheel" are striated (lined) like the edge of a quarter. One "axle" looks like a grease fitting, but no hole in it. Other "axle" is broken off but was threaded. Wondering if it's something to apply tension (like spreading or reducing something?) hence the threads. Round part is about the size of a half-dollar. This is bugging us. Any ideas?

 

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[digging440yrs]

looks like a knob from a old dashboard

 

[Loco-Digger]

My guess is old high end radio knobs.

 

[deepsecrets]

Looks very much like the blade depth adjustment wheel of an old carpenters hand plane.

 

[sutphin]

SECRETS I CONCOUR ....

 

[fowledup]

Looks like the tuning pulleys on the old console tube type radios.

 

[DCMatt]

Looks very much like the blade depth adjustment wheel of an old carpenters hand plane.

Agree.

 

[NOLA_Ken]

Yup, adjuster from an antique plane, you can see one that's almost identical right behind the knife in this pic.

 

[lockster99]

Not too sure, all my planes, have the threaded shaft going thru the knob instead of being a one piece set up. Hundreds of planes and styles out there though. What do i know?