If you’ve been knitting for a while, you’ve probably got a ton of old mystery needles. Maybe the end cap has fallen off. Maybe the printing has rubbed away. For whatever reason, you don’t know what size it is. But the needle is fine and you want to keep using it. A needle view sizer helps you figure out what size it is so you can do that.

Simply slip your needle into the holes until you find the one that fits.