What is this tool thread? Take a guess. Stump the Toolman!

halifaxhops said

Thickness guage?

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Honestly I'm stumped myself. It definitely measures something because as you turn the knob the pointer moves, but my thought is why is there so much tool if the measurement is in that one spot?

halifaxhops said

Here

View attachment 1716057409

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Also looks like a harmonic balancer puller?