Differential Screw Leveling Plate

This is differential screw leveling plate. Each knob actuates a corner of the stage by .25mm per revolution and has a total range of about 2mm. It requires some McMaster componenets listed below.

https://www.mcmaster.com/catalog/129/3680/95316A126
https://www.mcmaster.com/91828A415/
https://www.mcmaster.com/91828A420/

I don't think you could find the thread adapters easily elsewhere, but you could definitely shop around for cheaper nuts than the ones I listed.

https://www.youtube.com/watch?v=SgK3sMUz9lU&t=2s