I make little (usually 6" X 4") wood boxes. My bench router is used quite a bit for chamfering, beading, etc. It's a simple affair with a fairly basic router suspended upside down under an aluminum table. It was always a pain making fine adjustments to height because the springs are strong, the positioning awkward, etc. Then I decided to be innovative . . . or crazy. I bought a small scissors jack. I secured the router table solidly to my workbench, in the process lifting it by about 4" so the "top" of the router when fully dropped would clear the top of the jack when fully collapsed. Now when I need to adjust the cutter I just slip the jack underneath the router, unlock the plunger, screw up or down as required - with no effort and complete control, lock the plunger again, slide the jack out - and I'm good to go. And all for a lot less than the price of a micro adjuster.