USB Microscope Z-axis Adjustment mount

# Microscope Z-axis height adjustment mount.

[These are the ball bearing wheels I used](https://www.amazon.com/gp/product/B07TH7WS2N/ref=ppx_yo_dt_b_search_asin_title?ie=UTF8&psc=1) They are not common or cheap. I just had them on hand. You will need to adjust the interior diameter on the base and top and the exterior diameter on the screw and knob to fit your ball bearings. They are currently set to 47mm and 20mm respectively.

I had to put rubber feet on the bottom of it because the base print curled up slightly and wouldn't sit flat.