Originally Posted by lcor

Second sewing cabinet question of the day... I've noticed in my sewing cabinet drawer on the far right, a semi circle piece of metal. That side of the drawer also seems to be a bit more open in the back than the rest of the drawer. I'm assuming this serves some sort of important function, I just haven't been able to figure out what that function is. Any ideas?

And again, thanks for everyone's help. I've been learning a lot about my vintage machine + cabinet in the last couple of days.