Yes, I could. I believe the most straight forward design would be 3 micrometers directly supporting the piezoelectric component, with no levers.

Yet, they are a bit expensive. I'm still not willing to budget all that, but I'm starting to consider it.

Digital micrometers are expensive, but you can get analog ones on AliExpress [1] or other places for around $10. Of course, the precision may not be as good as name-brand (eg: Mitutoyo) tools.

[1] https://www.aliexpress.com/wholesale?catId=0&initiative_id=S...

Yes! Thanks a lot.

Looks like the exact thing I need are micrometer heads, and some even come with nice threaded mounts.

One more idea, there exist worm drive micrometers which allow you to step down the linear movement per revolution even more:

https://www.global-optosigma.com/en_jp/Catalogs/pno/?from=pa...

If you have machining/fabrication skills, it might also be possible to buy a few worm gear sets and modify your micrometer to move really slowly but precisely.

Excellent, glad that you found this to be helpful. Good luck with your project!