Link to tach page is no longer available.Hey Paul!
What info were you after? For the leadscrew mod or for the tachometer?
I have already made a page for the tachometer which is here: Gough - A Spindle Tachometer for the Lathe
I'll make another page for the leadscrew modification and get back to you with the info!
Be aware that link is to a website that is only a few days old, it's hot off the press and only partially complete! So if there's any issues just let me know.
-A
I did look at your main page though. Extremely nice knives!