The 8x42 BX-1 McKenzie Binocular from Leupold, in black, features phase-corrected BAK4 roof prisms and anti-reflection fully multi-coated optics to produce a versatile and capable optic with accurate high-contrast color rendition, and bright and clear images. Coupled with the optical features are 42mm diameter objectives that give the binocular very competent low-light performance. This combination of optics and objectives make the McKenzie ideally suited for most outdoor activities from hunting, to birding, to sporting events.

Complementing the optical performance are construction details that make the binocular durable and comfortable to use. The housing is protected by a black rubberized armor that is textured for a non-slip grip. The optical tubes are nitrogen-filled and O-ring sealed to be water and fogproof. A right-eye diopter adjustment and twist-up eyecups allow the binocular to be customized to most people's needs and can be comfortably used with or without eye wear. For long-term glassing, the McKenzie is tripod mountable with an optional adapter.

Optical Performance
  • 8 magnification
  • 42mm objective lens
  • BAK4 roof prism optical design
  • Phase-corrected prism coatings reduce internal light diffraction to improve contrast, clarity, and color rendition
  • Anti-reflection fully multicoated lenses maximize light transmission for bright and clear images
  • 49° apparent field of view
  • 320' field of view at 1000 yards
  • Long 17.7mm eye relief
  • Wide 5.25mm exit putpil
Use and Handling
  • Closed bridge configuration
  • 56-74mm interpupillary adjustment range
  • Large center focus wheel is easy to manipulate in cold or wet conditions, or when wearing gloves
  • Twist-up eyecups for comfortable use with or without eye wear
  • Right-eye diopter adjustment
  • Tripod mountable with optional adapter
Construction Details
  • Nitrogen-filled fogproof and waterproof housing
  • Black rubberized armoring exterior protects against bumps and impacts
  • Textured surface provides a non-slip grip
  • Ergonomically-placed thumb indents on bottom of optical tubes provides extra grip stability and comfort
  • Weight: 22-ounces
Prism Type Roof
Magnification 8x
Objective Lens Diameter 42mm
Angle of View 6.1° (actual)
Field of View 320.2' @ 1000 yd / 106.7 m @ 1000 m
Minimum Focus Distance 9.8' / 3 m
Exit Pupil Diameter 5.25 mm
Eye Relief 17.7 mm
Interpupillary Adjustment 56.0 - 74.0 mm / 2.2 - 2.9"
Dioptric Correction Not Specified by Manufacturer
Focus Type Center
Tripod Mount Yes (Adapter Optional)
Dimensions Length: 5.8" / 14.7 cm
Weight 22.1 oz / 626.5 g

Leupold & Stevens, Inc. là một nhà sản xuất ống nhòm của Mỹ, nằm ở Beaverton, Oregon, Hoa Kỳ. Công ty bắt đầu hoạt động vào năm 1907, là công ty gia đình sở hữu và được điều hành bởi 5 thế hệ gia đình. Leupold được quân đội mỹ, các lực lượng Navy SEALS tin tưởng chọn làm nhà cung cấp các thiết bị quang học để sử dụng cho nhiều mục đích khác nhau, trong đó có ống nhòm.


Leupold & Stevens was founded by the German immigrant Markus Friedrich (Fred) Leupold and his brother-in-law Adam Voelpel in 1907, under the name Leupold & Voelpel. At the time, the company specialized in the repair of survey equipment.In 1911, Leupold & Voelpel was contracted by John Cyprian (J.C.) Stevens to manufacture a water level recorder he had designed and patented. After the initial success of the product, he was made partner in 1914 and the company was renamed Leupold, Voelpel, and Co. Besides the first water level recorder, the company invented several other innovative pieces of equipment, such as the Telemark water recorder which was patented in 1939.This device could transmit water level information via telephone, allowing for remote monitoring of water resources to become feasible.

In 1942, the company name was changed to its present form, Leupold & Stevens. Surveying equipment, rifle scopes, and related products are sold under the "Leupold" name, while water monitoring instrumentation, such as level and flow recorders, are marketed under the "Stevens" brand.[5]

After World War II Leupold & Stevens began making gun scopes after Marcus Leupold failed to hit a deer with his rifle. His scope fogged up and he is reported to have exclaimed "Hell! I could build a better scope than this!" as the deer bounded off.By 1979, the Leupold scopes were generating twice the total revenue of Stevens instruments.

By 1996, the company had sales of $100 million. In 1998, the water monitoring portion of Leupold & Stevens was spun off into its own privately held Portland-based business, Stevens Water Monitoring Systems, inc., with Leupold & Stevens also retaining the "Stevens" name as part of their corporate identity. In 2002, Leupold & Stevens won a Wausau Insurance Gold Award for workplace safety at the company’s factory. By 2006, the company employed 600 people at its Beaverton facility. The company is now in its fifth generation of ownership.

In 2008, Leupold & Stevens purchased Redfield Optics along with its brand name and all intellectual property rights. In 2010, the company added almost 100 employees, bringing total employment to almost 700 by November of that year. In late 2010, a Portland Business Journal article gave the company's annual revenue as approximately $160 million, citing Reference.com for the estimate. A new chief executive, Bruce Pettet, was named in February 2014.


The company’s scopes are used by organizations such as the United States Army, the Secret Service, and the Navy SEALS. The United States Navy and the Marine Corps also use their scopes. Leupold & Stevens also manufactures binoculars for sport hunting.

The 2014 high NRA metallic silhouette Nation Championship equipment survey lists leupold as the most popular scope manufacturer for both the high power and high power hunter competition. 

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