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Porro Prism Binocular 8 x 40

BI030019

    • PREMIUM QUALITY PRISM– Barium Crown glass (BAK4) Porro prism.
    • SPECIFICATION– 8x magnification and 40mm objective diameter.
    • FIELD OF VIEW– 435 ft @ 1000 yds / 145m @ 1000m. Center focus with independent right ocular adjustment.
    • LENSES– FBMC (Fully Broadband Multi-Coating) glass coated lenses for superior image brightness. Eye Relief of 19mm.
    • ACCESSORIES INCLUDED– Neck strap, eye-cup protectors, objective lens protectors, carrying case, lens cloth and instructions.
    • Intended use: Field
    • Encapsulated tritium (Isotope H3) light sources are at each hour position on dial and on hour & minute hands
    • 316L high-impact stainless steel case with screw-down case back
    • Water resistant to 3ATM and dust proof
    • Each watch is numbered individually.
    • Includes nylon strap 16mm
    • Other strap options available in nylon and leather

    Product Details

    • MOVEMENT: High-torque Quartz
    • LUMINOUS FEATURES: Tritium gas tubes
    • DIMENSIONS: 39mm Diameter / 11mm thickness
    • STRAP: 16mm black nylon
    • CALENDAR: Date

    BAK4, or Barium Crown glass, is considered the best type of prism material. It has a high refractive index and lower critical angle than other materials, which means it transmits light better with less peripheral light being lost due to internal reflection. Field of view is expressed in feet at a distance of 1,000 yards or meters at 1,000 meters, and is the width of the visible area that can be seen without moving the binoculars. The 19mm eye relief is the optimal distance from the eyepiece to your eye, or the focal point where the light passes through the ocular lens. Great to use even with eyeglasses. The Fully Broadband Multi-Coating offers the highest level of light transmission, clarity, contrast and colour rendition. Additional Features- • Built-in tripod mount. • Neck strap, eye-cup protectors, objective lens protectors, carrying case, lens cloth and detailed instructions included.

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