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10. Conversion
Example: Convert 30 statue miles into nautical
miles and kilometres.
Operation: Align “30” on the outer scale with
STAT () on the inner scale. Then, NAUT () on
the inner scale corresponds to “29” nautical miles
on the inner scale, and “12 km”(s) on the inner
scale corresponds to “48.2” km on the outer
scale.
B. General Calculation Functions
1. Multiplication
Example: 20 x 15
Answer: Align the “20” on the outer scale with “10”
on the inner scale. Then, “15” on the inner scale
corresponds to “30” on the outer scale. Take into
account the position of the decimal point and add
one zero to obtain 300. Note that with the scales
of this watch, the position of the decimal point
cannot be obtained.
2. Division
Example: 250 / 20
Answer: Align “25” on the outer scale with “20” on
the inner scale. Then, “10” on the inner scale
corresponds to “12.5” on the outer scale. Take into
account the position of the decimal point to obtain
12.5.
3. Proportion
Example: 30/20 = 60/x
Operation: Align “30” on the outer scale with “20”
on the inner scale. Then, “60” on the outer scale
corresponds to “40” on the inner scale. At this
point, the proportion for every value on the inner
and outer scales is 30:20.
4. Square root
Example: Square root of 225
Operation: Turn the outer scale slowly and find a
value that corresponds to both “22.5” on the outer
scale and “10” on the inner scale. In this example,
‘‘22.5’ on the outer scale corresponds to “15” on
the outer scale. Thus, the answer is 15.
To Keep Your Watch in Good Condition
Water resistance
* To prevent water from coming into contact with the
internal mechanism of the watch, never pull the
crown out when the watch is wet.
* If your water-resistant watch is exposed to salt
water or significant amounts of sweat, rinse it in
clean water and dry thoroughly.
* Exposure to water will diminish the durability of
most types of leather bands.
* The internal parts of the watch may hold some
moisture. If the external temperature is lower than
that inside the watch, the crystal may get fogged up.
Temporary fogging does not pose a problem. If it
persists for a prolonged period, we recommend that
you have your watch checked by your authorised
dealer or a Citizen Service Centre.
Temperature
Avoid exposing the watch to direct sunlight or leaving
it in an extremely hot or cold location for prolonged
periods.
* This will cause malfunctioning and shorten the life
of the power cell.
* This may cause your watch to gain or lose time,
and affect its other functions.
Shock
* This watch will withstand bumps and jars normally
incurred in daily use or while playing non contact
sports such as golf.
* Dropping the watch on a hard floor or otherwise
applying shock to it may cause malfunction or
damage.
Magnetic Fields
This watch is antimagnetic up to 60 gauss and will
not be affected by the magnetic fields produced by
ordinary household electrical appliances. If used in
the immediate vicinity of strong magnetism, however,
the functions of the watch may temporarily be affected.
Static electricity
The integrated circuits used in the watch are sensitive
to static electricity. If exposed to intense static
electricity. the display may be adversely affected.
Chemicals and Gases
Avoid wearing the watch in the presence of strong
chemicals or gases. If the watch comes in contact
with solvents such as thinner and benzine or
products containing materials such as gasoline,
polish, detergent or adhesive, its components may
discolour, dissolve or crack. Be especially careful to
avoid chemicals. The watchcase and band may
become discoloured if they come in contact with
mercury. such as from a broken thermometer.
Keep your watch clean
When the watch has been worn for a prolonged
period, pulling the crown out may become difficult
because of dirt and dust caught between the crown
and the watchcase. To help prevent this from
happening, rotate the crown back and forth
occasionally while it is in the normal position.
Wipe off any moisture that adheres to the case,
crystal and band with a soft, clean cloth. Dirt left on
the case or band may cause a skin rash.
A watch band will easily become soiled with dust
and perspiration, as it is in direct contact with the
skin. Even a stainless steel or gold-plated band may
begin to corrode if it has not been cleaned for a
prolonged period.
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