Inserting The Battery - National Geographic 4X21 Instrucciones De Uso

Range fi nders can be widely used in sports and activities like golf
and hunting to measure the distance, of buildings or electrical
wire poles, as well as to measure the general terrain.
Fig. 1 shows the shape of the range fi nder.

Inserting the battery

Slide the battery compartment cover (Fig. 1, 6) out using your
thumb, and raise it up. Insert the 9V compound battery into the
compartment, padded corners fi rst.
NOTE:
i
Make sure when inserting the battery that
the polarity is correct (+/–) as shown on
the compartment cover.
After inserting the battery, press the cover down again,
and slide it back to its original position against the direction of
the arrow on the cover.
Operation
1. Look through the eyepiece (Fig. 1, 1). As this device has a
fi xed focus system, there is no need to focus manually.
2. Depress the function button (Fig. 1, 5) for about 3 seconds
to turn the device on. Now when you look into the eyepiece
(Fig. 1, 1), the function symbols appear in the lens coverage
(Fig. 2).
3. To measure distance, aim
object, and then press th
The distance of the object
tion display.
4. When turning on the devic
(M, for metres, or Y, for y
can be changed by press
down after turning the ran
in the display will then cha
5. The power will be switch
mately 15 seconds if the
not used.
NOTE:
i
Distance measu
ted by the chara
surface fi nish, s
emitted laser be
conditions (e.g.
If the object is large, the col
fl ective), the surface is smoo
perpendicular to the surface
is increased. Conversely, if
maximum range is decreased
Measurement precision ma
twigs and other debris cover