Thank you for purchasing the Nikon Binocular telescope.
Before using the product, read this manual thoroughly to ensure proper use.
After reading this manual, keep it in a readily accessible place for future reference.
About the manual
●
•No part of the manual may be reproduced, transmitted, transcribed, stored in a retrieval system, or
translated into any language in any form, by any means, without Nikon’s prior written permission.
•Illustrations shown in this manual may differ from the actual product.
•Nikon will not be held liable for any errors this manual may contain.
•The appearance, specifications, and capabilities of this product are subject to change without notice.
SAFETY AND OPERATION PRECAUTIONS
Strictly observe the guidelines contained in this manual in order to use this product safely and
prevent possible injury or property damage to you and others. Understand the contents thoroughly
for correct use of the product.
WARNING
This indicates that improper use by ignoring the contents described herein can result in potential death or
serious injury.
CAUTION
This indicates that improper use by ignoring the contents described herein can result in potential injury or
material loss.
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En
Notice for customers in the State of California
WARNING:
This product contains chemicals including Lead which is known to the State of California to
cause cancer and birth defects or other reproductive harm. For more information go to www.
P65Warnings.ca.gov.
■ SAFETY PRECAUTIONS (Binoculars)
WARNING
Never look at the sun directly while using binoculars.
Looking directly at the sun or intense light may seriously damage the eyes or cause blindness.
CAUTION
•Keep the plastic bag used to wrap this product or other small parts out of reach of children. The bag may
block their mouths and noses and cause them to suffocate.
•Your fingers may get pinched when you adjust the interpupillary distance or diopter. Be particularly
careful when letting small children use the product.
•Be careful of children inadvertently swallowing small parts or accessories. If children swallow such parts,
see a doctor immediately.
•Do not leave this product in an unstable place. It may fall and cause injury or malfunction.
•The horn-shaped eyecups and caps of this product may deteriorate when used or stored over long periods
and may stain clothes. Check them before use, and consult with a Nikon authorized service representative
if you find a defect due to deterioration.
•Using the rubber horn-shaped eyecups for extended periods of time may cause skin inflammation. If you
develop any symptoms, stop use and see a doctor immediately.
•Do not disassemble. Repair should be referred to a Nikon authorized service representative.
■ SAFETY PRECAUTIONS (Fork mount)
CAUTION
•When attaching the fork mount to a base or pillar stand, firmly secure the fork mount with bolts and nuts.
•When attaching the fork mount to the body, firmly tighten the body fixing screw.
9
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■ HANDLING AND OPERATION PRECAUTIONS
8
9
0
2
5
•Do not open the prism box beyond the limit. Also, do not rotate rotating parts such as knobs and the
diopter adjustment rings beyond their limits.
•Do not subject this product to physical shock.
•If you subject the product to strong physical shock by dropping it during attachment or removal, consult
with your local dealer or a Nikon authorized service representative immediately.
•When changing the orientation or angle of this product, move it carefully within the movable range
without applying excessive force so that the movable parts are not damaged.
•When changing the orientation or angle of this product, make sure to loosen the screws first without
applying excessive force. After adjustment, make sure to tighten the screws to secure the body.
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■CARE AND MAINTENANCE PRECAUTIONS
LENS
●
Be careful that you do not directly touch the lens surface with your hands when cleaning it. Remove dust or
lint with a blower*. For fingerprints or other stains that cannot be removed with a blower, wipe the lens with
a dry soft cloth or cleaning cloth for eyeglasses, using a spiral motion that starts at the center of the lens and
working towards the edges. Wiping too firmly or wiping with a hard material may damage the lens. If this
fails, gently wipe the lens using a cloth lightly dampened with commercial lens cleaner.
Be careful because the quality of the lens surface coating in particular may change and deteriorate if it is air
dried with water drops present.
* A rubber cleaning tool that blows air from a nozzle.
MAIN BODY
●
Remove dust trapped in the rotating parts of the diopter adjustment rings, etc. with a soft brush.
After gently removing dust with a blower, clean the body surface with a soft, clean cloth. After use at a
seaside, wipe off salt that may be on the body surface with a damp, soft, clean cloth, and then wipe with a
dry cloth. Do not use benzene, thinner, or other cleaners containing organic solvents.
Nomenclature (body, fork mount)
Objective lens
1
Body fixing screw
2
Tilting clamp screw
3
Rotation clamp screw
4
Fork mount
5
Eyepiece lens
6
Horn-shaped eyecup
7
Diopter adjustment ring
8
Prism box
9
Body
0
1
2
3
10
6
7
ITEMS SUPPLIED
Binocular telescope body ×1
Eyepiece lens cap ×2
Objective lens cap ×2
Horn-shaped eyecup ×2
Vinyl cover ×1
Fork mount ×1
*1 Attached to the body at the time of purchase.
*2 May be not included in the items supplied depending on the purchased set.
*1
*1
*1
*2
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Installation procedures for the binocular telescope
Attaching the fork mount to a base
1. Make six 12 mm (1/2 in.) screw holes or
through holes in a base.
•Make the holes so that they match the
attachment holes at the bottom of the
fork mount (A).
2. Attach the fork mount to the base.
•Use 12 mm (1/2 in.) bolts, or bolts and
nuts, to firmly fasten the fork mount and
base.
Dimensional drawing of the bottom of the fork mount
A
148 mm
180 mm
6-13.5 mm
Attaching the binocular telescope to the fork mount
* Make sure not to drop the binocular telescope because it is heavy.
1. Loosen the two body fixing screws on the fork mount and open the left and right shaft holder lids.
•The correct attachment orientation of the fork mount is when the Nikon logo is in front of you.
2. Place the body on the fork mount.
•Insert the pin on the right side of the
body into the pin hole on the right side
of the fork mount (B).
B
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En
3. Close the left and right shaft holder lids
(C), and firmly tighten the body fixing
screws.
Pin
Pin hole
C
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Usage procedures for the binocular telescope
Horn-shaped eyecups
If you are wearing eyeglasses, remove them because horn-shaped eyecups are attached to the body.
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Adjusting the interpupillary distance
•Look into the eyepieces, open and close the
prism box as shown in the arrows in (D), and
adjust so that your view becomes a single
circle.
Adjusting the focus (diopter adjustment)
* The binocular telescope is the individual
focusing type.
•Adjust the focus on the target for each eye
(E).
D
0
E
0
0
0
12
About the scale on the diopter
adjustment rings
•These are useful for taking note of the scale
indicated on the index (F) when the focus is
adjusted, and re-adjusting the focus.
F
Index
0
0
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Adjusting the orientation and tilting
angle of the body
Changing the orientation: You can rotate
●
the body horizontally in 360 degrees.
1. Rotate the rotation clamp screw on the
fork mount counter-clockwise to loosen it
(G).
2. Adjust the orientation, and rotate the
rotation clamp screw clockwise to tighten
it.
Changing the tilting angle: You can adjust
●
the angle of the body from 70 degrees
above to 30 degrees below.
1. Hold the eyepiece lens or prism box with
your left hand to firmly support the body.
2. Rotate the tilting clamp screw on the
body counter-clockwise with your right
hand to loosen it (H).
•When it is loosened, the body will tilt to
the objective lens side. Firmly support
the body with your left hand so that the
body is not subjected to physical impact.
3. Adjust the angle, and rotate the tilting
clamp screw clockwise to tighten it.
G
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Rotation
clamp screw
En
H
Tilting clamp screw
After using the binocular telescope, make sure to tighten the screws
and check that the body and fork mount are secured.
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Specifications
■ Body
Model20×120 IV25×120
Magnification (×)2025
Objective diameter (mm)120120
Angular field of view (real) (˚)3.02.9
Angular field of view (apparent) (˚)
Field of view at 1,000 m/yd. (m/ft)52/15650/150
*1
55.364.7
En
Exit pupil (mm)6.04.8
Relative brightness36.023.0
Eye relief (mm)20.818.9
Close focusing distance (m/ft)133/436.4210/689.0
Length (mm/in.)680/26.8672/26.5
Width (mm/in.)454/ 17.9454/ 17.9
Height (mm/in.)160/6. 3160/6. 3
Weight (kg/oz.)14/493.814/493.8
Interpupillary distance adjustment (mm/
in.)
Diopter adjustment (m
Structure
-1
)-5 - +3-5 - +3
Waterproof (up to 2 m/6.6 ft for 10 minutes)
filled
58-74/2.3-2.958-74/2.3-2.9
*2
and nitrogen gas
*1 Apparent field of view is calculated based on the ISO14132-1:2002 standard
The number calculated by the formula [tan ω’ = Γ x tanω ]: Apparent field of view: 2ω’,
Magnification: Γ , Real field of view: 2ω
*2 The binocular telescope is waterproof, and will suffer no damage to the optical system if
submerged or dropped in water to a maximum depth of 2 m/6.6 ft for up to 10 minutes.
14
■ Fork mount
Tilting angle (Upward) (°)70
Tilting angle (Downward) (°)30
Horizontal rotation (°)360
Height (mm/in.)407/16.0
Width (mm/in.)406/16.0
Weight (kg/oz.)5. 5/194.0
Page 15
About waterproof and fogproof:
•All models shown are waterproof, and will suffer no damage to the optical system if submerged or dropped
in water to a maximum depth of 2 m (6.6 ft) meter for up to 10 minutes .
•Can be used in conditions of high humidity, dust and rain without risk of damage.
•Nitrogen-filled design makes them resistant to condensation and mold.
Observe the following when using these products:
•The binocular telescope cannot be used underwater. Also, do not subject it to strong water pressure such as
from running water.
•Any moisture should be wiped off before adjusting movable parts of these products to prevent damage.
To keep your binocular telescope in excellent condition, regular servicing by authorized dealer is
recommended.
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Cleaning lens
When cleaning the binocular telescope’s objective lenses using an aerosol-type dust cleaner, make sure to
hold the can upright at least 30 cm (11.8 in.) from the lens surface while moving the can to avoid focusing the
vaporized liquid gas on one point.
En
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Printed in Japan, 868C_3_1909
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