Poll: What Tool Do You Use to Set Blade/Bit Heights

So, you are working at your table saw or router table, and you need to make a hyper-accurate cut. I mean, this thing has to be so spot on, you need to be able to split the ear hair of a mosquito.

Fortunately, there are a great number of devices that have been invented to make this chore an easy one. Unfortunately, there are a great number of devices that have been invented to make this chore an easy one, and you have to pick which one works for you.

So, today, if you are looking to set up a very accurate height for a bit or a blade, which is your go-to method?

When you need to set a blade or bit height accurately, what tool do you use?