I also have a dial indicator but it spends most of its life stuck on my I beam. (and gathering both rust and dust by the looks!) I don't think I would even consider using it on my Router table (which is actually a spindle moulder but due to the fact I can fit it with 1/4 and 1/2 " collets I use it as a router table . Plus it has two thumb screws on the back for fine adjustments . Table saw yes siree its a must for setup.
Mainly if I am routing I adjust it by eye first up then use a test sample to fine tune it off the router bit profile. But to each his own its certainly a well designed gauge! In fact I think I have two dial indicators one I used on my thicknesser and Jointer when it had knives fitted, but time and technology changed all that with the introduction of tungsten inserts ( yee ha!)
