A:The first number is always going to be the magnification. This will tell you how close the image will appear when viewing thru the binocular (e.g. 8 times closer). The second number is the diameter of the objective lens in millimeters (mm)

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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.

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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.

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A:Porro prism binoculars have a “traditional” binocular shape, with the objective lenses offset from the ocular (eyepiece) lenses. Although they are bulkier than roof prism designs, porros offer excellent performance and good value, along with slightly greater depth perception and (usually) a wider field of view than an equivalent porro prism model.

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

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

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A:Individual eye strengths vary as do fingerprints. Please refer to the instructions below: 1. Adjust the interpupillary distance, using the binocular’s hinge, until you see a single circular image. 2. Set the 'diopter setting' (normally on the right lens eyepiece) to zero and view a distant object. 3. Keep both eyes open at all times. 4. Using a lens cover or your hand, cover the objective (front) lens of the side with the diopter setting ring. 5. Using the focus adjustment, focus on the distant object being viewed. 6. Cover the other objective lens, then view the same object as above. 7. Turn the diopter setting adjustment ring, until the distant object appears in sharp focus. 8. Your binocular should now be adjusted for your eyes. Make a note of the diopter setting for future use. - Notes: Zoom Binoculars should be set to their highest power first, then follow the instructions above.

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A:No. The distance between the eyes, called 'interpupillary distance' (IPD), 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 of or further apart until you see a single circular field. Always re-set your binoculars to this position before using.

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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 your binoculars feature rubber "fold-down" eyecups, store them with the eyecups up. This avoids excessive stress and wear 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. Even a brief exposure can cause permanent damage. 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 in a circular motion. Using a coarse cloth or unnecessary rubbing may scratch the lens surface causing permanent damage. 6. For a 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.

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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.

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