T n12 base for something

[cmthunder]

Can anyone help I’d
Thinking transit base for surveying?

 

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[Anduril]

Almost looks like it could be a big electrical knife switch.
I'm not familiar with them enough to say for "sure".

 

[NOLA_Ken]

jawbone for a little terminator?

 

[ARC]

Bakelite telephone part ?

 

[A2coins]

Heel plate lol

 

[ArfieBoy]

I think you may be on to something!

jawbone for a little terminator?