background image

        6. Using the “diopter setting” adjustment ring, focus 

            the same object being viewed. Caution should be 

            used as over turning or forcing the diopter eyepiece 

            can damage or cause the eyepiece to break away 

            from the chassis.
        7. Your binocular should be adjusted for your eyes               

           Focus at both far and near distance can now be 

           attained simply by turning the center focus wheel. 

Waterproof / Fog-Proof

Your binocular may be designed and built utilizing the latest 

waterproof and fog-proof technology. This binocular is 

O-ring sealed for complete protection. Fog proof protection 

is achieved from dry nitrogen purging to remove all internal 

moisture. 

Instructions For Care

If handled with care, this binocular will provide years of 

trouble-free service. Like any fine optical instrument your 

binocular should be given sensible care. Non waterproof 

models should not be exposed to excessive moisture. 
       1. Keep the lens covers (that come with your binocular, 

           except compact models) on the lenses when 

           binoculars are not in use. 
       2. Avoid banging and dropping.
       3. Store in a cool, dry place.
       4. Looking directly at the sun with your binocular may 

           be very harmful to you eyes.

This binocular is a precision instrument designed to provide 

many years of pleasurable viewing. This booklet will help 

you achieve optimum performance by explaining how you 

can adjust the binocular to your eyes, and how to care for 

this instrument. Read the instructions carefully before using 

your binoculars.

Eye Adjustments

Fig.1 INTERPUPILLARY DISTANCE ADJUSTMENT

HOW TO ADJUST FOR DISTANCE BETWEEN YOUR 

EYES
The distance between the eyes, called “interpupillary 

distance” (IPD), varies from person to person. To achieve 

perfect alignment of lens to eye, follow these simples steps. 
       1. Hold your binocular in the normal viewing position.
       2. Grasp each barrel firmly. Move the barrels closer 

           together or further apart until you see a single 

           circular field. Always re-set your binocular to this 

           position before using.
HOW TO ADJUST FOR INDIVIDUAL EYE STRENGTH
Human eyes are as individual as fingerprints. This 

binocular has a feature which allows you to adjust the 

binocular to your vision. Follow the focusing instructions for 

your binocular style.

Focusing

CENTER FOCUS-has a central focusing wheel between 

the barrels. 

        1. Adjust interpupillary distance (Figure 1)
        2. Keep both eyes “open” at all times.
        3. Using a lens cover or your hand, cover the objective 

            (front) lens of the side with the “diopter setting”
        4. Using the center focus wheel, focus the distant 

            object being viewed. 
        5. Cover the other objective lens, then view the same 

            object as explained above.

10x30mm Binocular Manual

5/20

BC641

©2020 BARSKA® Pomona, CA 91767, USA

www.barska.com

Parts Of The Binocular

A. Right Eye Diopter

B. Eyepiece

C. Center Focus

Read all instructions before use

DO NOT use this optical product to view the Sun 

or any light source. CAUTION: Viewing the Sun 

can cause permanent eye damage.

See reverse side for more information

D. Objective Lens

E. Tripod Adaptable Fitting

A

B

D

C

E

Reviews: