If in your area there's a carburetor service with calibrated drills they can say you how big is the hole tring different drills.

After that you can put into small plastic box and write with a permanent marker the size out of the boxes.

I do it when I need a particular size and don't find it.
I buy smaller size jets and get them drilled the size I need.
So I orderly catalog every jet into marked boxes and be careful to don't let them mixed.