Bushnell Marine 13-7500 Manuel utilisateur
Instruction Manual
Model: 137500
LIT. #: 981960/10-10
Binoculars
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The BUSHNELL MARINE is the perfect binocular for sailors and outdoorsmen. Your
model features a liquid-filled compass built into the viewing optics. Compass swing
stops immediately due to advanced damping design. Compass bearings are called out
in easy-to-read precise 1° increments. Ideal for shipboard navigation work or locating
objects accurately. A range-finding scale allows the viewer to estimate the range of
objects to a known size. The BUSHNELL MARINE is fully waterproof/fogproof and shock
protected with suregrip rubber armoring, and has roll-down eyecups for use with
sunglasses and prescription eyeglasses. Optics feature multi-coated lenses for excellent
light transmission. The BUSHNELL MARINE comes complete with rugged nylon case
and neck strap. Built to last, with a lifetime limited warranty.
SPECIFICATIONS
Magnication.............................7 x Relative brightness....................51
Objective lens diameter......50 mm Interpupillary distance...56~72 mm
Eye Relief...........................18 mm Maximum width........................3 in
Real eld of view.......................7 ° Minimum width......................2.5 in
Field of view @ 1000 yds....350 ft. Length......................................7 in
Exit pupil diameter.............7.1 mm Weight.....................37 oz / 1049 g
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HOW TO USE
First, adjust the width (interpupillary distance) of your binoculars with the central
hinge, so that when you look through them, you see a single circular image. Then
focus the binocular for one eye at a time by turning the oculars (eyepieces) until you
see an equally sharp image with each eye. If more than one person will be using the
binoculars, you should mark the left and right eyepieces for your own vision to permit
quick readjustment.
USING THE COMPASS
The compass is a precision unit. It has extremely fast damping so
that there is almost no ‘swing’ and is corrected for dip (Latitude).
The compass scale is in one degree increments and is aligned
with the vertical range nding scale. When using the compass,
always keep in mind the local variation between magnetic and
true north.
HOW TO USE THE RETICLE
The vertical scale (reticle) visible through the left half of the binocular, above the
compass display, allows you to calculate distance to an object if you know its height, or
to calculate the height of an object if you know its distance from you.
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5
Each mark on the vertical scale has a
value of 5 MIL (1 Mil is equivalent to
an angle that can determine an object
one meter in height at a distance of
1000 meters).Therefore, if a navigation
chart gives the height of an object,
by sighting on it and counting the
number of MILs, you can determine
how far away it is. Here are the two
formulas:
To measure distance when the height Is known:
OBJECT HEIGHT M X 1000 M = DISTANCE IN METERS
SCALE READING
To measure object height when the distance is known:
DISTANCE M X SCALE READING = OBJECT HEIGHT IN METERS
1000
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USING THE COMPASS ILLUMINATOR
The BUSHNELL MARINE compass model comes with
built-in LED compass illuminator for use at night and
in low light conditions. (Incidentally, the compass is
built into the left tube of the binocular but the push
button control for the light and the battery are located
in the right tube.This was done to minimize the chance
that electrical interference might aect compass
performance.) When the ambient light does not permit
you to see the compass heading clearly, press the button atop the right tube. If the light
is dim or does not come on, replace the batteries. If the light does not operate after
replacing the batteries, please contact the Bushnell
dealer nearest you.
HOW TO CHANGE THE BATTERIES
To change the battery, use a thin coin to remove the
battery cover by turning it counter-clockwise. Remove
the two batteries. The batteries have a (+) on the front
and a (-) on the back. Be sure to insert the new batteries
with (+) signs in the same direction. Replace the battery
cover by turning it clockwise.
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BATTERY EQUIVALENTS
MANUFACTURER TYPE
Toshiba, Maxell, Panasonic LR43
Varta 12GA
Eveready 186
Duracell D188AB
Rayovac 186-1
IMPORTANT
AFTER EXPOSURE TO SALTWATER OR SPRAY, FLUSH THE BINOCULARS THOROUGHLY
WITH FRESH WATER AND WIPE DRY. AVOID EXTENDED EXPOSURE TO BRIGHT SUNLIGHT
ANDSEVERETEMPERATURE FLUCTUATIONS.FOREXAMPLE,IFTHEBINOCULARHASBEEN
USED UNDER VERY COLD CONDITIONS, BRINGING IT INTO A HEATED ENVIRONMENT
COULD CAUSE CONDENSATION BUILD UP. ALLOW TIME FOR GRADUAL CHANGE IN
TEMPERATURE.
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