Warning!!!
You do
NOT run the carriage up to the stop under power feed or threading it will kill the lathe.
It is for running the carriage up to a preset stop setting by hand.
This allows you to keep coming back to the same place every time without a bunch of fiddling around.
Many uses for it too many to point out.
I had a need, then an idea with a problem to solve then the problem was solved and the contraption was made.
Very happy with this and how it came out so far, a real blessing to have this simple device.
Worth