I checked the accuracy of this small tool: every step visually exactly matched to measurement of my metal ruler (I do not need higher accuracy in my woodworking). All characters are engraved and showed in black paint. Small size allowed to put in an apron pocket. I just did a couple of test cuts with the gauge.Only time will show how convenient its usage is, but so far I am satisfied with this measuring tool. .

This tool is perfect for saw set ups and router height

Works like a champ. Raise the blade until it just touches the depth stop and the measurement is right on target. Could not be easier.

Got this to use as a table saw height measurement (haven't got a router yet. But soon!) and it has been super helpful on getting the height correct for uniform multi-pass dado cuts on a single blade. Can definitely recommend for any beginner and use with calipers for extra precision!

The tool was recommended in a user YouTube video. I’m glad I bought it. Does the job and cost is reasonable.