NAECMPSX
INSTRUCTION
BOOKLET
ROTATING COMPASS
RING & TELEMETER
Approx. 3 km
A
A
1. Press button ”A”
to start the
stopwatch as
soon as you see
the light.
Note:
Please note that the stopwatch second hand moves in
1/5 second increments and does not always point
exactly to the graduations of the telemeter scale. The
telemeter scale can be used only when the measured
time is less than 60 seconds.
Before beginning, check that the stopwatch
has been reset.
START
(Flash of light)
STOP
(Crash of thunder)
■ HOW TO USE THE TELEMETER
2. When you hear
the sound, press
button ”A” to
stop the
stopwatch.
3. Read the telemeter
scale that the
stopwatch second
hand points to.
ROTATING COMPASS RING
(using with the hour hand to indicate directions)
PRECAUTIONS ON USING THE ROTATING
COMPASS RING
● The rotating compass ring can be used in the
Northern Hemisphere only. In areas at latitudes
lower than the tropic of Cancer, it may not
indicate directions properly depending on the
season.
● Please use the rotating compass ring in places
where the sun is visible or its location is known.
● Before using the rotating compass ring, it is
necessary to set the hour hand to the current
time of your location.
● The rotating compass ring is designed to
provide only a rough indication of direction. For
activities such as mountaineering and
orienteering, which require very accurate
directions, be sure to use a conventional
magnetic compass with this watch.
■ How to use the rotating compass ring
Notes:
* In the a.m. period, set the rotating compass ring to
the middle point of the arc to the left of the 12 o’clock
marker. In the p.m. period, set the ring to the middle point
of the arc to the right of the 12 o’clock marker.
* The rotating compass ring rotates clockwise if the crown
at the 10 o’clock position is turned counterclockwise, and
rotates counterclockwise if the crown is turned clockwise.
N
S
W
E
N
S
W
E
➮
[In the a.m. period]
North
North
Set“S”
South
South
N
S
W
E
N
S
W
E
South
Set“S”
South
➮
[In the p.m. period]
North
North
2Turn the crown at the 10 o’clock position to
set “S” (south) on the rotating compass ring
to the middle point of the arc between the
12 o’clock marker and the time scale
indicated by the hour hand.
The compass ring is graduated in 15°
increments.
1 While keeping the dial level, point the hour
hand in the direction of the sun.
TELEMETER
● The telemeter can provide a rough indication of
the distance to the source of light and sound.
● The telemeter indicates the distance from your
location to an object that emits both light and
sound. For example, it can indicate the distance
to the place where lightning struck by measuring
the time elapsed after you see a flash of lightning
until you hear the sound.
● A flash of lightning reaches you almost
immediately while the sound travels to you at a
speed of 0.33 km/second. The distance to the
source of the light and sound can be calculated
on the basis of this difference.
● The telemeter scale is so graduated that the
sound travels at a speed of 1 km in 3 seconds.*
The telemeter provides only a rough indication of
the distance to the place where lightning struck,
and therefore, the indication cannot be used as
the guideline to avoid the danger of lightning. It
should also be noted that the speed of the sound
differs depending on the temperature of the
atmosphere where it travels.
CAUTION
*Under the condition of temperature of 68ºF. (20ºC)
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