from The Century Dictionary and Cyclopedia
- n. Flakes of oxid of iron which fall from the bloom, ingot, or bar while it is being rolled.
Sorry, no etymologies found.
But it is still more unbelievable that a prejudice, equally unfounded, existed against putting into the blast furnaces the roll-scale from the mills which was pure oxide of iron.
I recommended our people to send Du Puy to Cleveland to contract for all the roll-scale of my friend's establishment.
One day, when I was visiting his works at Cleveland, I saw men wheeling this valuable roll-scale into the yard.