What methods, KISS/MISS techniques has everyone worked out to get where they need to be???

For depth/set back I found this... easy, fast and simple...
cheap too...
http://www.trend-uk.com/en/US/produc...imperial_.html

More for the depth... sweet...
but not cheap...
https://www.kregtool.com/store/c41/r...le-setup-bars/

for absolute centering to fences or guides... this... comps for the dia and cutters all on it's own...
go with SAE and metric guides...
very cheap...
Westcott C-Thru Circle Templates - BLICK art materials

since Bosch routers are 3" CL to base edge virtually religiously this works great to set an edge guide to the cut's CL...
no fuss no muss or compensating...
Veritas® Precision Square - Lee Valley Tools

for those obscure dado widths I set up a pair of parallel clamps on guides with a sliding spreaders to maintain spacing and an undersized shallow cut bearing guided mortising bit..

Some nice little tools there. For height/depth cuts, I have a Wixey Height Gauge. I like it except for the fact that the battery runs sown too quick. I've gotten into the habit of pulling the battery after each project.