levenhuk Wise PLUS 10×56 Monocular with Reticle User Manual

: June 9, 2024
: levenhuk

Table of Contents

Levenhuk Wise PLUS 10×56 Monocular with Reticle
Features
Specifications
- Reticle
Care and maintenance
Battery safety instructions
Levenhuk Warranty
References
Read User Manual Online (PDF format)
Download This Manual (PDF format)

Levenhuk Wise PLUS 10×56 Monocular with Reticle

Levenhuk-Wise-PLUS-10x56-Monocular-with-Reticle-
PRODUCT

The Levenhuk Wise PLUS 10×56 Monocular with Reticle is a device that enables users to observe birds or animals in their natural habitats, study urban architecture, and watch football games at stadiums. It has a reticle that allows users to calculate the distance to the target and its size using angle readings. It is important to note that users should never look directly at the Sun, another bright source of light, or at a laser through this device as it may cause permanent retinal damage and blindness.

Features

Monocular
Eyepiece and objective lens caps
Strap
Pouch
Optics cleaning wipe
User manual
Warranty

Reticle
The Levenhuk Wise PLUS 10×56 Monocular with Reticle has a reticle that can be used to calculate the distance to the target and its size using angle readings. Users should note that the reticle appearance in their model may differ from the one in the user guide.

Using the reticle to calculate the distance
When users know the target’s size in meters, they can calculate the distance to the target in kilometers using this formula:

S = H / (w/1000)

where S is the distance to the target in km, H is the estimated height of the target in m, and w is the vertical angle of the target in mil.

Calculating the target’s size using angle readings
When users know the distance to the target in kilometers, they can calculate its height and width in meters using the distance measurement formula:

H = S x (w/1000)

where H is the estimated height or width of the target in m, S is the distance to the target in km, and w is the vertical or horizontal angle of the target in mil.

Using the additional reticle to calculate distance directly
If the target’s height is known to be 2m, users can calculate the distance to it using the additional reticle on the bottom half of the lens without using a formula. To do so, place the target on the horizontal line of the reticle. The point where the target touches the scale is the distance in meters.

Specifications

Magnification: 10x
Objective lens diameter: 56mm
Field of view: 4.9mm
Exit pupil diameter: 17mm
Eye relief: 24mm
Relative brightness: N/A
Twilight factor: N/A
Close focus: N/A
Tripod adapter thread: Yes
Operating temperature range: N/A

Product Usage Instructions

Remove the eyepiece and objective lens caps from the Levenhuk Wise PLUS 10×56 Monocular with a Reticle kit.
Adjust the focusing and diopter of the monocular to obtain a clear image.
Attach the monocular to a tripod using the tripod adapter thread if required.
Use the reticle to calculate the distance to the target and its size using angle readings or to calculate the distance directly using the additional reticle on the bottom half of the lens.
After use, store the monocular, eyepiece, and objective lens caps, strap, pouch, optics cleaning wipe, user manual, and warranty in a safe place.

Levenhuk Wise PLUS 10×56 Monocular with Reticle
Never, under any circumstances, look directly at the Sun, another bright source of light, or at a laser through this device, as it may cause PERMANENT RETINAL DAMAGE and may lead to BLINDNESS.

Levenhuk Wise PLUS 10×56
monoculars perform equally well in the countryside and within the city limits. They are perfect for those who want to observe birds or animals in their natural habitats; those studying urban architecture; and even those who enjoy watching a football game at a stadium.

Features:

Quick and precise focusing;
Comfortable twist-up eyecup;
Rangefinder scale for convenient measuring of the observed object’s size or distance to the object;
Adaptable to a tripod (purchased separately).

The kit includes a monocular, eyepiece, and objective lens caps, strap, pouch, optics cleaning wipe, user manual, and warranty.

Reticle

This device is equipped with a rangefinder scale. It consists of vertical and horizontal lines with divisions on the lens and enables the measurement of the height, distance, and size of a target as well as the angle between two close targets (or between the two ends of one target). A division value on both vertical and horizontal lines equals 5mils (360º equals 6400mils) and, therefore, the distance between two big nicks on a scale equals 10mils. The reticle also has an additional scale on the bottom half of the lens that enables the quick measurement of the distance to a target 2m high

The reticle appearance in your model may differ from the one in this user guide.

Using the reticle to calculate the distance
When you know the target’s size in meters, calculate the distance to the target in kilometers using this formula: where S is the distance to the target in km, H is the estimated height of the target in m, and w is the vertical angle of the target in mil. For example, the estimated height of the lighthouse shown in Fig. 1 is 30m, and its vertical angle is 75mils. The distance to the target is calculated as follows:

Therefore, the distance to the target is 0.4km. Levenhuk-Wise-PLUS-10x56
-Monocular-with-Reticle-PRODUCT-1 Calculating the target’s size using angle readings
When you know the distance to the target in kilometers, you can calculate its height and width in meters using the distance measurement formula: where H is the estimated height or width of the target in m, S is the distance to the target in km, and w is the vertical or horizontal angle of the target in mil. For example, the estimated distance to the tank shown in Fig. 2 is 0.25km, the vertical angle is approximately 10 miles, and the horizontal angle is 20 miles. Calculate the size using the formula: Therefore, the tank’s height is 2.5m, and the tank’s width is 5m. Levenhuk-Wise-PLUS-10x56-Monocular-with-
Reticle-PRODUCT-2 Using the additional reticle to calculate distance directly
If the target’s height is known to be 2m, you can calculate the distance to it using the additional reticle on the bottom half of the lens without using a formula. To do so, place the target on the horizontal line of the reticle. The point where the target touches the scale is the distance in meters. For example, the distance to the tank shown in fig. 3 is 550m. Levenhuk-Wise-
PLUS-10x56-Monocular-with-Reticle-PRODUCT-4 The manufacturer reserves the right to make changes to the product range and specifications without prior notice.

Care and maintenance

Take the necessary precautions when using the device with children or others who have not read or who do not fully understand these instructions. Do not try to disassemble the device on your own for any reason. For repairs and cleaning of any kind, please contact your local specialized service center. Protect the device from sudden impact and excessive mechanical force. Do not touch the optical surfaces with your fingers. Clean the lens surface with compressed air or a soft lens cleaning wipe. To clean the device’s exterior, use only the special cleaning wipes and special tools that are recommended for cleaning the optics.

Battery safety instructions

Always purchase the correct size and grade of battery most suitable for the intended use. Always replace the whole set of batteries at one time; taking care not to mix old and new ones or batteries of different types. Clean the battery contacts and also those of the device prior to battery installation. Make sure the batteries are installed correctly with regard to polarity (+ and –). Remove batteries from equipment that is not to be used for an extended period of time. Remove used batteries promptly. Never short-circuit batteries as this may lead to high temperatures, leakage, or explosion. Never heat batteries in order to revive them. Do not disassemble batteries. Remember to switch off devices after use. Keep batteries out of the reach of children, to avoid the risk of ingestion, suffocation, or poisoning. Utilize used batteries as prescribed by your country’s laws.

Levenhuk Warranty

All Levenhuk telescopes, microscopes, binoculars, and other optical products, except for their accessories, carry a lifetime warranty against defects in materials and workmanship. A lifetime warranty is a guarantee of 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 the purchase date. The warranty entitles you to the free repair or replacement of the Levenhuk product in any country where a Levenhuk office is located in all the warranty conditions are met. For further details, please visit www.levenhuk.com/warranty If warranty problems arise, or if you need assistance in using your product, contact the local Levenhuk branch.

CONTACT INFORMATION
www.levenhuk.com
Levenhuk Inc. (USA): 928 E 124th Ave. Ste D, Tampa, FL 33612, USA, +1-813-468-3001, contact_us@levenhuk.com
Levenhuk Optics s.r.o. (Europe): V Chotejně 700/7, 102 00 Prague 102, Czech Republic, +420 737-004-919 sales-info@levenhuk.cz Levenhuk® is a registered trademark of Levenhuk, Inc. © 2006–2023 Levenhuk, Inc. All rights reserved.