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.
....

Never heard that term for it but have always taken the trouble to "just
neaten-up things a little" as my grandad usta' call it...

The correct orientation is horizontal, however, not vertical...

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