On Thu, 09 Jul 2009 15:01:35 -0400, Tom Watson wrote:

I was affixing a brass plaque the other day and, as is my practice when
installing hardware with slotted screws, I "dusted" them.

To me, this means that the slots are vertical and that they all match.

I've used this term for years and I've been asked where the term came
from.

I don't know the origin of the term, but yes, I try to do that when I
remember.

--
Intelligence is an experiment that failed - G. B. Shaw