He started America on a path
to the METRIC system but then just gave up.
The Big Bang Theory Season 4, Episode 7
That Americans can't handle
the METRIC system?
The Big Bang Theory Season 7, Episode 6
200 METRIC tons
of fuel will
The Big Bang Theory Season 5, Episode 24
That Americans can't handle
the METRIC system?
The Big Bang Theory Season 7, Episode 10
To the METRIC system.
The Big Bang Theory Season 4, Episode 7