Not-fine adjustment

If you are purchasing this item because you want micro adjustment, save your cash. This knob is threaded onto a coarse threaded rod. In my world, the word micro means 'very small'. A fine threaded rod would have been better here. In my review of the router itself I mention this as well. Replace the threaded rod with a fine threaded rod. Buy a couple of nuts to fit it and a knurled knob. Bam... in comparison this would be a micro adjustment knob. Also, if you are using any taller bits, the micro adjustment knob has to be backed of so far that it comes off the top of the threaded rod. Where is the micro adjustment in this. For those of you using this a router for your table... I can imagine that a nut attached to a small fly handle would be better...faster adjusting any way. Of course you still have the coarse threaded rod to make those super fine adjustments.

A nice adjuster

This came with my Hiatchi M12V, which I got here at Amazon for a very reasonable price (Home Depot's price was $50 more!). I use this adjustment knob when the router is mounted in its table. I removed the plunge springs to keep them elastic. Although not a perfect system (raising all the way up takes a lot of rotations!), it definitely is better then trying to fight the springs with one hand and hold a square in the other!

Router table users beware.

I'm pleased with the ease the adjustment knob attached on my Hitachi M12V and with the way the knob allows fine adjustments. Use it with something like the General Tools 23 Aluminum Router Gauge or a drill bit (known diameter/height) to get the adjustments you want. However, if you are a bench top router table user be aware that this is one tall adjustment handle. You may have to set your table up on blocks or use it between to different benches to keep the adjustment handle from bottoming out.