This idea is evolved from another Instructable >https://www.instructables.com/id/Cant-Find-the-Correct-Drill-or-Wrench-Size-Here/<. My thanks to Spikoli for sending me in the right direction.
There's always a problem when I begin working on a project that requires multiple sized wrenches. This is especially true when I work on my boats and cars. Each of these toys are filled with complicated mechanical systems and many, many different sizes of fasteners.
I don't know about you, but I really don't care if that bolt I'm trying to remove is a 3/16", 1/4" or a #12. I'm also not able to (even though its fun to try) guess the size by feeling it through a 3"x3" opening.
Time to ask myself what it is I really want... When I'm working, what matters is my ability to choose the tool that fits the bolt. It really doesn't matter what dimension is stamped into the metal.
I also don't care if my tools maintain the same look they did when they lived in the store where I bought them. I use, modify and trim them to fit the job I'm working on, so box wrenches might be ground down to fit a snug opening or cut away completely.
All I want is to be able to grab the tool I need, when I need it...
And I think I've figured out how to do that.
Step 1: What You'll Need:
Paint... Lots of colors.
A job that has numerous, varied sized nuts and bolts.
Also, for additional ID of specific wrenches that are used a lot, a label making machine.
You may also want to try this with a colored plastic spray coating in lieu of paint.