This should go on about any manual lathe. It would be nice to use a 2" or 50mm travel indicator. This is for SAE, but i have included the STP file if you want to do your own thing.

Printed no supports. used ¼-20 bolts, one i think ¾ long (pinches the indicator in), and one just long enough to thread into the base (holds the base on the lathe way). I tapped the top hole for the short bolt, and the bottom plate for the long bolt.

This is rev2, the first was half as thick, and was not stable.