What Centering Jobs Can You Do With It?

[chips and more]

Found this thing at the flea market last weekend. From what I have read, it's a center finder for machinist use? Anybody know anything about it? It's marked with "BRELSFORD". I guess I center stuff differently, I can't see it in use LOL. Lets see how many heads go a scratching LOL. You cannot view this attachment.
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[Bill Gruby]

?

  "Billy G"

[4GSR]

I could think of a thing or two but would be inapproiate to post here

[Uglydog]

Found this:
https://patents.google.com/patent/US2621420

Perhaps if I waded through all the semantics at the bottom of the patent application while having the tool in front of me so I could tinker with it. But ...

But I don't know how it works.

Daryl
MN

[chips and more]

Uglydog, you did good, thank you! Weeeeel after looking over the patent description and holding the center thing in my hands, I still can't figure it out. I guess because it doesn't look anything like a wiggler, I'm getting a brain freeze LOL.