Bob Engelhardt wrote:
I am going to make a threading dial for my Jet 1024. ...

Thanks for all the replies in this thread. I have finished my dial,
after many distractions. Here is a pictu
http://home.comcast.net/~bobengelhardt/thread-dial.jpg

I made the gear by hobbing a piece of plastic, unknown lineage. But it
machined real nice - long smooth curls, very waxy in appearance. And
strong (tensile). The threading dial that I copied had a spur gear, but
I cut a worm wheel, to fit the worm lead screw. The tool I ground to
cut the hob was not very precise, but it works. I "gashed" the gear on
the lathe by using the feed gear train to step the spindle. I also
hobbed the gear on the lathe with the hob between center and by making a
blank holder to fit the lathe tool holder.

There is a spring under the head of the mounting SHCS. It supplies
enough pressure to hold the gear against the screw, but allows the dial
to be swung away.

Thanks again,
Bob