Specifying Temperature, Barometric Pressure, And Altitude Display Units; To Specify Temperature, Barometric Pressure, And Altitude Display Units; Taking Barometric Pressure And Temperature Readings; To Take Barometric Pressure And Temperature Readings - Casio 3444 Operation Manual

2. During the 60 seconds that digital compass readings are being taken, press E to store the current
reading in Bearing Memory.
• The Bearing Memory direction angle fl ashes for about one second as it is stored in Bearing
Memory. After that, the Bearing Memory screen (which shows the bearing memory direction angle
and pointer) will appear, and a new 60-second direction reading operation will start.
You can press C at any time while the Bearing Memory screen is displayed, to start a new
•
60-second direction reading operation. Doing so will display the direction angle for the direction
that the 12 o'clock position of the watch is pointed. The direction angle of the current reading will
disappear from the display after the 60-second direction reading operation is complete.
• During the fi rst 60 seconds after you display the Bearing Memory screen or during a 60-second
direction reading operation you triggered by pressing C while the Bearing Memory screen is on
the display, the direction stored in memory is indicated by a Bearing Memory pointer.
Pressing E while the Bearing Memory screen is displayed will clear the reading currently in
•
Bearing Memory and start a new 60-second direction reading operation.
Setting a map and fi nding your current location
Having an idea of your current location is important when mountain climbing or hiking. To do this, you
need to "set the map", which means to align the map so the directions indicated on it are aligned with the
actual directions of your location. Basically what you are doing is aligning north on the map with north as
indicated by the watch.
• Note that map reading skills and experience are required to determine your current location and
destination on a map.
E-40
Digital Compass Precautions
Magnetic North and True North
The northerly direction can be expressed either as magnetic north or true
True north True north
north, which are different from each other. Also, it is important to keep in mind
that magnetic north moves over time.
Magnetic north Magnetic north
• Magnetic north is the north that is indicated by the needle of a compass.
• True north, which is the location of the North Pole of the Earth's axis, is the
north that is normally indicated on maps.
• The difference between magnetic north and true north is called the
"declination". The closer you get to the North Pole, the greater the
Earth Earth
declination angle.
Location
• Taking a direction reading when you are near a source of strong magnetism can cause large errors in
readings. Because of this, you should avoid taking direction readings while in the vicinity of the
following types of objects: permanent magnets (magnetic necklaces, etc.), concentrations of metal
(metal doors, lockers, etc.), high tension wires, aerial wires, household appliances (TVs, personal
computers, washing machines, freezers, etc.)
• Accurate readings are impossible indoors, especially inside ferroconcrete structures. This is because
the metal framework of such structures picks up magnetism from appliances, etc.
• Accurate direction readings are also impossible while in a train, boat, air plane, etc.
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Specifying Temperature, Barometric Pressure, and Altitude Display Units

Use the procedure below to specify the temperature, barometric pressure, and altitude display units to be
used in the Barometer/Thermometer Mode and the Altimeter Mode.
Important!
• When TYO (Tokyo) is selected as the Home City, the altitude unit is set
automatically to meters (m), the barometric pressure unit to
hectopascals (hPa), and the temperature unit to Celsius (°C). These
settings cannot be changed.
To specify temperature, barometric pressure, and altitude display
units
1. In the Timekeeping Mode, hold down E for at least two seconds.
First, SET Hold will fl ash on the display, and CITY will be displayed in
the upper display. After that, the currently selected city code and city
name will scroll across the upper display. Keep E depressed until the
scrolling starts.
2. Press D as many times as necessary until UNIT appears on the
display.
• See the sequence in step 2 of the procedure under "To change
the current time and date settings manually" (page E-30) for
information about how to scroll through setting screens.
E-44

Taking Barometric Pressure and Temperature Readings

This watch uses a pressure sensor to measure air pressure (barometric pressure) and a temperature
sensor to measure temperature.

To take barometric pressure and temperature readings

Barometric Barometric
While in the Timekeeping Mode or in any of the sensor modes, press B
pressure graph pressure graph
to take barometric pressure and temperature readings.
• BARO will appear on the display, indicating that barometric
pressure and temperature reading are in progress. The results
will appear on the display after about one second.
After you press B, the watch will take readings every fi ve seconds
•
for the fi rst three minutes, and then every two minutes after that.
Note
Press D to return to the Timekeeping Mode.
•
Pressure Pressure
differential differential • The watch will return to the Timekeeping Mode automatically if you
Barometric Barometric
pointer pointer
do not perform any operation for about 1 hour after entering the
pressure pressure
Temperature Temperature
Barometer/Thermometer Mode.
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Operation Guide 3444
Example: Advancing to an objective while monitoring the direction to it
Even if you lose sight of your objective, you can use a map to store the required bearing in bearing
memory and refer to the memorized information to advance to your objective.
1. Set the map (page E-40).
2. Without changing the orientation of the map, place the watch on it at your current location, and point 12
o'clock at your desired objective on the map.
3. With the 12 o'clock position of the watch pointed towards your objective on the map, press C.
• The watch starts taking direction readings, with the fi rst result appearing after about one second.
4. During the approximately 60 seconds that direction readings are being taken, press E to store the
bearing direction in memory.
To recall a stored bearing and display its literal direction indication and bearing angle, press C.
•
Now you can advance towards your objective while observing the stored direction on the watch
display.
Important!
• As you progress, the direction to your bearing will change, so you need to keep updating the
information in bearing memory.
Storage
• The precision of the bearing sensor may deteriorate if the watch becomes magnetized. Because of
this, you should store the watch away from magnets or any other sources of strong magnetism,
including: permanent magnets (magnetic necklaces, etc.), concentrations of metal (metal doors,
lockers, etc.), and household appliances (TVs, personal computers, washing machines, freezers, etc.)
• Whenever you suspect that the watch may have become magnetized, perform the procedure under "To
perform bidirectional calibration" (page E-37).
3. Perform the operations below to specify the display units you want.
To specify this unit: Press this key:
A
Altitude
B
Barometric Pressure
C
Temperature
4. After all of the settings are the way you want, press E twice to exit the setting screen.
Barometric Pressure
Barometric pressure Barometric pressure
• Barometric pressure is displayed in units of 1 hPa (or 0.05 inHg).
change indicator change indicator
• The displayed barometric pressure value changes to - - - if a measured
barometric pressure falls outside the range of 260 hPa to 1,100 hPa (7.65
inHg to 32.45 inHg). The barometric pressure value will reappear as
soon as the measured barometric pressure is within the allowable range.
Temperature
• Temperature is displayed in units of 0.1°C (or 0.2°F).
• The displayed temperature value changes to - - - °C (or °F) if a
measured temperature falls outside the range of –10.0°C to 60.0°C
(14.0°F to 140.0°F). The temperature value will reappear as soon as
Barometric Barometric Temperature Temperature
the measured temperature is within the allowable range.
pressure pressure
Display Units
You can select either hectopascals (hPa) or inchesHg (inHg) as the display unit for the measured
barometric pressure, and Celsius (°C) or Fahrenheit (°F) as the display unit for the measured temperature
value. See "To specify temperature, barometric pressure, and altitude display units" (page E-44).
Barometric Pressure Graph
Barometric pressure indicates changes in the atmosphere. By monitoring
Barometric pressure graph Barometric pressure graph
these changes you can predict the weather with reasonable accuracy.
This watch takes barometric pressure reading automatically every two
hours. Readings are used to produce barometric pressure graph and
barometric pressure differential pointer readings.
To toggle between these settings:
m (meters) and ft (feet)
hPa (hectopascals) and inHg (inches of mercury)
°C (Celsius) and °F (Fahrenheit)
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E-43
E-45
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