guess what these are?

[strollingbones]

 

[Si modo]

Train wheels? Huge train wheels.

 

[del]

either driving wheels or earrings of the gods

 

[Madeline]

Wheels of some sort....del colored wheels.

 

[uscitizen]

Sundials for blind people?

 

[zzzz]

Parts of a large clock!

 

[uscitizen]

Waterwheel hubs?

 

[strollingbones]

yall are real close

 

[Baruch Menachem]

cable drivers and a balance wheel

 

[ReallyOrnery]

strollingbones:

They are the focusing gears found in a 1969 Nikon F 50mm F/1.4 lens.

RO

 

[DiveCon]

cable drivers and a balance wheel

^^^ that or parts for a big clock
LOL

 

[Zoom-boing]

Playground equipment.

 

[Samson]

cable drivers and a balance wheel

Wheels of cable winding machine used to pull a cable car. San Francisco, California, USA...the two pieces were attached.

 

[Big Black Dog]

Drive belt pulley from an old saw mill???????

 

[daveman]

cable drivers and a balance wheel

Yup, my guess too.