In article , "Phil Kane"
writes:

On 1 Oct 2004 20:05:47 -0700, William wrote:

Not limited to weather, however, the context -was- weather. I'll
allow you to slide on this one if you can produce licensure or
credentials in "metrology."

Any high school graduate who paid attention during the science
classes knows that -40F = -40C without having to calculate it.

Folks have flunked out of first-year engineering and science classes
for less than that.

...only if those students were PCTA and tried to beat up an NCTA
teacher. :-)

Tsk. I never saw anyone flunked out of ANY engineering classes
due to not knowing the merge-point of the scales. I just cheat now
by punching a few keys on my little HP 32S II...does the scale
conversion automatically. :-)