Remark :
Actual air pressure in the measurement location changes
in response with two things :
changes in altitude and changes in atmosphere.
2)Sea level barometric pressure value measurement
Not move the location, if intend to see the sea level
barometric pressure value, the procedures are :
Press the " Hold button " once, the Display will show the
indicator " HOLD " then press the " REC button "
continuously until the left down bottom of Display show
" m " or " Ft "
m = meter
F = feet
Use the " Hold button " and the " button "
adjust the location altitude vale exactly..
Until the location altitude value is set, press
" REC button " will show the sea level barometric pressure
value.
button = button,
▲
Hold button = button
▼
REC button = Enter button
Remark :
After power off and on again, if select the " Barometric
pressure " function again, the meter will show actual
air pressure in the measurement location ( absolute air
pressure value ) not the sea level barometric pressure value.
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