Measuring With a Shaft Key
...ft keys between 1/8″ and 1/2″. You can buy a whole set for mere dollars. I used a sharpie to mark the dimensions of my set of shaft keys. I use them mostly for setting the depth of my router and table saw. Using your sense of touch, aided by a shaft key, is much more accurate than using your eyeballs and a ruler. But I also found them handy for assembling a new fence over the weekend. I wanted 1/4 inch gaps between the fence slats and used a shaft...
