A：It is the minimum distance an object must be for it to be brought into focus.

A：Most AIMTECHUS binoculars are fitted with rubber eyecups that can be twisted or rolled down for an improved field of view with glasses.

A：Individual eye strengths vary as do fingerprints. Please refer to the instructions below for your individual type of binocular.

A：No. The distance between the eyes, called 'interpupillary distance', varies from person to person and your binocular must be adjusted accordingly.

1. Hold your binoculars 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 binoculars to this position before using them.

A：The size of the objective lens on binoculars aids in the binoculars ability to gather light. The larger the lens the more light that is captured giving you a brighter image.

A：The first number is always going to be the magnification. This will tell you how much closer (8x) the subject will appear when viewing thru the binocular. The second number is the diameter of the objective lens in millimeters.

A：When handled with care, your binoculars will provide years of trouble-free service. Like any precision instrument, your binocular should be given reasonable protection.

1. If binoculars feature rubber "fold-down" eyecups, store them with the eyecups up. This avoids excessive stress and wears placed on the rubber eyecups in the down position. Twist-up and pop-up eyecups can be stored in either position.

2. Avoid banging and dropping.

3. Store in a cool, dry place. Avoid storing in your vehicle as temperature fluctuations and prolonged vibration can damage any optical instrument.

4. Never look directly at the sun with your binocular. It may be very harmful to your eyes.

5. Keep your lenses clean with the following instructions.

▪Blow away any dust or debris on the lens (or use a soft lens brush).

▪Remove dirt or fingerprints with a soft cotton cloth by rubbing it in a circular motion.

▪Coarse cloth or unnecessary rubbing may scratch the lens surface causing permanent damage.

6. For more thorough cleaning, you may use photographic quality lens tissue and cleaner. Always apply the fluid to the paper or the cloth, not directly on the lens. The new microfiber cleaning cloths and "lens pens" are also highly recommended. They do not require cleaning fluid.

A：Since the prisms in the binoculars overlap closely, the objective lens and the ocular lens are aligned, and the binoculars will be slimmer, more streamlined, less bulky and more rugged than a Porro-Prism binocular.

A：This will designate that you have a low battery.

A：Usually, this is caused by the unit suffering some type of impact that misaligns the unit. I suggest contacting our Service Center at 1-978-4207898 pressing option 2 choice 4 Optics.

A：AllAIMTECHUSRangefinders have a class one laser.

A：The Yardage Pro Scout takes a CR2 Lithium battery.

A: Your riflescope needs to be focused only once-for YOUR eyes. If another shooter uses your scope, it must be refocused for their eyes. The following steps will assist in the proper focusing of your riflescope with a traditional style focus ring. If you have a scope with a fast-focus eyepiece, skip steps 1, 2 and 9.

1.Grasp the knurled eyepiece lock ring and loosen it by turning the eyepiece counterclockwise.

2.Turn the lock ring clockwise for about five turns.

3.Look through the scope at a bright background such as the sky or a well-lighted wall. (Never look at the sun!) Focusing is easier with the scope mounted on a rifle or some firm object.

4.Turn the eyepiece, counterclockwise, until the reticle appears slightly blurred.

5.Turn the eyepiece, clockwise, until the reticle comes into focus.

6.Look away from the scope for a few seconds. Then look back quickly through the scope. If the reticle appears sharp and clear the instant you place your eye to the scope, the focus has been properly set for your eyes. Try this several times.

7.If the reticle appears fuzzy or requires a little time to come into sharp focus, further adjustment is needed. Turn the eyepiece clockwise another full turn and repeat STEP 8.

8.Keep doing this until the reticle is sharp the instant you put your eye to the scope.

9.When satisfied with your focus, tighten the lock ring against the eyepiece firmly.

A: Proper mounting is best performed by a professional gunsmith or experienced hunter. For detailed instructions feel free to contact our customer service department via E-Mail or phone (1-978-4207898), or contact your local gunsmith.

A: As convenient as vehicle storage may be, it can also be detrimental to your scope. Closed vehicles retain very high levels of heat. This intense heat could adversely affect the lubricants and sealants in your scope. Another danger comes from the constant vibration of a traveling vehicle as it can loosen your mounts and affect the zero point of your rifle.

A: Three things will determine light transmission: The glass used in the lenses. The use of an anti-reflective lens coating. Effective use of the lenses in the scope.

A: With proper care, your scope should last you a lifetime. When cleaning the lenses, reasonable precautions are necessary. Dry dirt and dust can be removed by air blast or with a soft brush. Fingerprints and lubricants can be wiped off with an eyeglass tissue or a cotton swab and a mild soap solution. Use the lens covers supplied with your scope whenever convenient.

A: None, with proper care and mounting, your scope should last a lifetime. Due to the unique internal seals and special lubricants, your scope can maintain a dry gas atmosphere to prevent fogging of the lenses in any conditions. No lubricants or solvents are required to preserve mechanical function.

A: None, with proper care and mounting, your scope should last a lifetime. Due to the unique internal seals and special lubricants, your scope can maintain a dry gas atmosphere to prevent fogging of the lenses in any conditions. No lubricants or solvents are required to preserve mechanical function.

A: The following tips can help even the best hunters odds:

▪A variable power scope should be set to its lowest power for fast target acquisition. High powers should be reserved for long-range, controlled shots.

▪Lens caps provide good protection in foul weather by should be removed when stalking or still shooting to save time in snap shooting situations. Take off transparent or tinted covers to avoid image distortion. AIMTECHUS optics are recessed to avoid lens contamination with lens covers removed.

▪Using a AIMTECHUS Bore Sighter is recommended after any fall or mishap to assure the zero point of your rifle.

▪Storing your rifle and scope overnight in outdoors will help avoid external fogging of optics. In extreme cold, cycle the action a few times to loosen it up prior to returning to the hunt.

A: Yes. All of AIMTECHUS's Night Vision products include shield-encased image intensifiers to block X-rays. All of AIMTECHUS's infrared illuminators utilize harmless filtered incandescent bulbs or light-emitting diodes (LEDs) instead of lasers.

A: No. This unit must be powered off by pressing the on-off button located on the back lower side of the unit.

A: No. This unit must be powered off by pressing the on-off button located on the back lower side of the unit.

A: All night vision devices need some available light to work. It is possible to see a bright image in low light or no light conditions with the use of an Infrared Illuminator. An Infrared Illuminator is standard on all AIMTECHUS Night vision devices.

A: AIMTECHUS Night Vision products collect and amplify existing light through the objective lens which is then focused on the image intensifier. Inside the intensifier, a photocathode is "excited" by the light and converts the photon energy into electrons. These electrons accelerate across an electrostatic field inside the intensifier and strike a phosphor screen (like a green monochrome TV screen) which emits an image that you can see. It is the acceleration of electrons, which provides gain and enhances the image.

A: It takes 2 hours to charge the battery. The charger has a LED light on it which will remain red while charging, and then turn green when the unit is charged.

A: The number one damage factor is using the device in bright light. While all AIMTECHUS Night Vision devices have a cut-off circuit when overexposed, exposure will shorten the life span of a night vision device. Exposure to rain, fog, or even extremely high humidity may damage night vision devices. Built for use at night, they can withstand short exposure to dampness or high humidity conditions. Night Vision devices have delicate vacuum intensifier tubes that are sensitive to impact and should be handled carefully. Clean lenses the same way you would your camera. The lenses are optically coated and may be scratched if abrasive material is used or if dirt is rubbed into the glass. Usually, there is no need to remove the lenses and clean them inside. Storage for long periods is best in a cool dry place with the batteries removed.

A: Night Vision devices operate as a light amplifiers for light in the "near visible" light range. Generally, this is in the 750-850 nanometer range. It can not detect heat, which is at a much lower end of the light spectrum, and requires thermal imaging technology.

A: All AIMTECHUS Night Vision Monocular scopes are activated in a way that can not be left on when not in use. The power button is designed to give power only while being depressed. The binocular devices do have on/off switches that require the user to remember to turn off the unit. Some level of "buzzing" sound is quite normal and is intended to be useful in remembering to turn off these units when done using them. The image of a night vision device will not be as sharp as that of a daylight binocular. This is due largely to the image being generated on a phosphor screen. Black spots may be visible in the image. This comes as a natural process of manufacturing the intensifier tubes.

A: Recreational uses consist of camping, hiking, fishing, boating, and nature viewing. Other uses include surveillance, search and rescue, and property management.

A: The key difference between the night vision generations is the intensifier technology. Gen. I devices use an intensifier tube that amplifies ambient light by accelerating electrons and striking a phosphor surface just like a television. Generation II devices add a micro-channel plate that multiplies the number of electrons before they impinge on the phosphor screen, thus increasing gain; Generation III devices further add a Gallium Arsenide photocathode which creates significantly more photoelectrons than Gen. II devices.

Generation II and III devices offer greater light amplification but a price beyond the reach of most buyers. Generation I devices are high quality and provide light amplification adequate for most recreational activities and for many professional uses.

AIMTECHUS has introduced an Advanced Night Vision device that produces images comparable to Generation 2 devices. The Advanced Night Vision device does not contain a Micro Channel plate but uses fiber optic bundles to eliminate distortion thus providing excellent resolution and a flat field of view. The result is superior image quality comparable to Generation 2 devices at half the cost.

A: It varies anywhere from 1-1800 feet. The maximum viewing distance depends on the conditions of use and upon the model chosen. Overcast conditions, fog, rain; etc. may reduce the effective distance of night vision. An Infrared Illuminator will increase viewing range, especially in enclosed areas like a warehouse, cave, or thick brush.

A: AIMTECHUS Night Vision products are unquestionably warranted to be free of defects in material and workmanship for two years after the date of purchase. In the event of a defect under this warranty, we will at our option, repair or replace the product.

A: Night Vision devices are designed for use in the dark. It may be harmful and can damage the device if you use it during the daytime or in other very bright situations. Keep in mind that strong direct light, such as projectors, car headlamps, strong flashlights, and so on, may be harmful to your Night Vision unit if you direct your device to the source of these intense lights. With this said AIMTECHUS Night Vision devices have electronic protection against such damage. Most of these simply turn off overloaded circuits, but some have more sophisticated and separate light-sensing mechanisms.

A: A Night Vision scope is made up of a set of optics (glass), a simple power supply (batteries, wire, transformer, regulators and capacitors), and an image intensifier (a glass vacuum tube with a light-sensitive coating at one end and a phosphor screen at the other).

A: The short answer is that you don't see through the night vision device, rather you see the phosphor screen on the back of the tube. The objective lens focuses the image on the front of the intensifier tube. That image is then converted into electron energy. It paints that picture on the back of the tube. You need to have a sharp image to start with. Then your eye needs to be focused on the back of the tube where the image resides. Every eye is different and therefore the ocular focus is very important. Focus on the ocular first and then move to the objective lens. You may have to adjust each lens several times before getting a sharp image.

A: The more you magnify the more light you lose.

A: It is the minimum distance an object must be for it to be brought into focus.

A: A spotting scope is a small telescope that has been modified for use by day. A spotting scope differs from an astronomical telescope in several important ways.

1.A spotting scope always produces an upright image whereas a telescope used in astronomy may produce a reversed image or even an upside-down image (not a problem for astronomy).

2.A spotting scope is much smaller in size than an astronomical telescope, mainly for the sake of portability.

3.A spotting scope is a lower magnification instrument than a telescope since the atmosphere by day does not allow the high magnifications used in astronomy.

4.A spotting scope is mounted on an ordinary photo tripod, but a telescope for astronomy requires a very specialized mount, often unsuitable for daytime use.

5.Lastly, many, if not most, spotting scopes are waterproof and fog proof - a rare feature in an astronomical telescope.