Hi again...

Help the classically challenged again please.

My first car was a '65 bug when it wasn't ten years old. I've seen and worked with plenty of tools but I can't figure out how this thing works. (Another attic treasure...)

This looks like the predecessor to the timing light.





Those rings are spring steel.



I Googled this kit number yesterday and found many references to its presence but no detail on how it worked.

What in the hell are those rings for?

And into what was that dial chucked?

Thanks again.

-Dave

It is for setting Ignition points, I used to use one in the 60's-70's.
The rings go over the distributor's cam lobes so you don't have to set the engine with the point follower on top of a lobe.
The gauge has the needed point gap plus the thickness of the ring so you points are set correctly.

Ah. I can picture the ring function. Thanks Jay.

So is the numbered dial no more than an adjustment wrench with a visual reference point for rotation? (like: "You need to close the points up by -2 on the dial")



...sorry about the acronym Peter

The Dial is for setting dwell angle on older GM products.