U
SER
’
S
G
UIDE
— 33
The
Sheet
Metal/HVAC
Pro
Calc
calculator
has
keys
and
functions
labeled
in
common
sheet
metal/HVAC
or
construction
terms.
Just
follow
the
examples
and
adapt
the
keystrokes
to
your
specific
application.
Your
calculator
will
save
you
time;
you
don’t
need
to
remember
common
formulas,
as
they
are
built
into
timesaving
keys.
The
first
examples
that
follow
provide
you
with
mathematical
problems
seen
in
the
sheet
metal
industry,
such
as
computing
triangle
measurements
using
the
Pythagorean
Theorem
or
the
Law
of
Cosines,
as
well
as
dedicated
Offset,
Fan
Law,
and
Velocity
functions.
The
remaining
examples
apply
to
the
construction
trades,
especially
roof
framing,
which
also
depends
on
Right
Triangle
mathematics.
It
is
good
practice
to
clear
your
calculator
(press
o
twice)
before
beginning
each
problem.
And
remember
to
use
the
Backspace
(
B
)
key
to
correct
entries
one
entry
at
a
time.
EXAMPLES —
USING THE SHEET METAL/HVAC PRO