Bushnell Marine 13-7500 Manual de usuario

Instruction Manual

Model: 137500

LIT. #: 981960/10-10

Binoculars

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

Magnication.............................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

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.

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

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 aect 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.

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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