Gene Nygaard wrote:
What physical quantity do you think a grocery store scale measures?

You can probably figure that out for yourself, if you stop to think
about how they are tested and certified.

You misunderstand, Gene. It's not at all clear what _you_ think they
measure. I'm not asking about the units displayed on them. What
physical quantity do you think is actually being measured?

And so a torque wrench has what kind of units printed on its scale -
mass and distance, or force and distance?

Once again, it doesn't cost you any more to pay attention.

They are units of force and distance,

There's the point.

That the poundal system is much older than the slug system is merely
one of the many clues as to which is older, the pound mass or the
pound force.

Ah, older. So that means.........what?

73, Jim AC6XG