Bad news I'm afraid Stew,
Got the bit's OK but mine is a different thread,
You sent, as far as I can work out, a stylus with a 7/64 dia and a 48tpi thread, (7/64, 0.1080", 2.74mm) 48tpi is the same or very close to 0.5mm pitch.
But 7/64 48tpi doesn't seem to make much sense with threading charts so it could be 3mm 0.5 pitch.
This is the same as my other dial gauge.
My new gauge has 2.53mm dia and 0.45 pitch (2.53, 0.100") seems to be no eqv tpi to 0.45mm pitch.
I guess in real life that translates to 2.5mm x 0.45mm
The wobbler, is that it's real name? seems an interesting device. I guess for measuring under something, such as what John was doing with my mini lathe when working out how bent it was

Here's a pic as it's not fair for others reading without knowing what on earth we are talking about....

