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Care and maintenance
•  Never, under any circumstance, look directly at the Sun, another bright source of light or at a laser through this device, as this 

may cause PERMANENT RETINAL DAMAGE and may lead to BLINDNESS.

• 

Take necessary precautions when using the device with children or others who have not read or who do not fully understood these 
instructions.

• 

Do not try to take the device apart on your own. For repairs of any kind, please contact your local specialized service center.

• 

Do not touch the optical surfaces with your fingers. You can use a soft napkin or a cleaning wipe, dipped in ether or absolute alcohol, to 
clean lenses. We recommend using special optics cleaning fluids from Levenhuk. Do not use any corrosive or acetone-based fluids to clean 
the optics.

• 

Abrasive particles, such as sand, should not be wiped off lenses, but instead blown off or brushed away with a soft brush.

• 

Do not apply excessive pressure when adjusting focus.

• 

Do not submerge.

• 

Protect the device from sudden impacts and excessive mechanical force.

• 

Store the device in a dry, cool place away from hazardous acids and other chemicals, away from heaters, open fire and other sources of 
high temperatures. Do not use the device for lengthy periods of time, or leave it unattended in direct sunlight. Always store the device in a 
special case. 

• 

We recommend keeping the silicate gel pack, when included in the kit.

• 

During long storage, a thin white film may appear on the rubber armor. You can wipe it clean with a clean napkin.

Levenhuk International Lifetime Warranty

All Levenhuk telescopes, microscopes, binoculars and other optical products, except for accessories, carry a lifetime warranty against defects 
in materials and workmanship. 

Lifetime warranty 

is a guarantee on the lifetime of the product on the market. All Levenhuk accessories are 

warranted to be free of defects in materials and workmanship for 

six months 

from date of retail purchase. Levenhuk will repair or replace 

such product or part thereof which, upon inspection by Levenhuk, is found to be defective in materials or workmanship. As a condition to 
the obligation of Levenhuk to repair or replace such product, the product must be returned to Levenhuk together with proof of purchase 
satisfactory to Levenhuk.
This warranty does not cover consumable parts, such as bulbs (electrical, LED, halogen, energy-saving and other types of lamps), batteries 
(rechargeable and non-rechargeable), electrical consumables etc.
For further details, please visit our web site: www.levenhuk.com/warranty
If warranty problems arise, or if you need assistance in using your product, contact the local Levenhuk branch.

www.levenhuk.com
Levenhuk, Inc. 924-D East 124th Ave. Tampa, FL 33612 USA
Levenhuk®  is a registered trademark of Levenhuk, Inc.
© 2006–2020 Levenhuk, Inc. All rights reserved.
20200221

Summary of Contents for NELSON Series

Page 1: ... compass for easy orienting Rangefinder scale for convenient measuring of the observed object s size or distance to the object The kit includes monocular objective lens cap strap pouch optics cleaning wipe user manual and warranty Focusing and diopter adjustment Follow this procedure to adjust focus and diopter setting Set the focus diopter adjustment wheel to its original position the white mark ...

Page 2: ...The counter directional angle 190 180 10 from the buoy to the boat To locale your position precisely you need to have a second reference In Fig 3 by using the lighthouse as the second reference the direction from the lighthouse to the boat is 120 300 180 120 and the buoy 10 Reading the rangefinder scale To accurately use the rangefinder scale you will need to know either the size or distance of th...

Page 3: ...ve lens diameter aperture 35mm 1 38in 42mm 1 65in Compas and rangefinder built it Real field of view 7 5 7 Field of view 130m 1000m 427ft 1000yds 120m 1000m 394ft 1000yds Relative brightness 25 27 56 Twilight factor 15 65 18 33 Exit pupil diameter 5mm 0 2in 5 25mm 0 21in Eye relief 23mm 0 9in Close focus 3m 10ft Diopter adjustment 4D Body plastic sealed nitrogen filled Waterproof class IPX7 protec...

Page 4: ...a special case We recommend keeping the silicate gel pack when included in the kit During long storage a thin white film may appear on the rubber armor You can wipe it clean with a clean napkin Levenhuk International Lifetime Warranty All Levenhuk telescopes microscopes binoculars and other optical products except for accessories carry a lifetime warranty against defects in materials and workmansh...

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