HOW TO USE THE RETICLE

The vertical scale (reticle) visible through the left half of the binocular, above the compass display, allows you to calculate distance to an object if you know its height, or to calculate the height of an object if you know its distance from you. Each mark on the vertical scale has a value of 5 MIL (1 Mil is equivalent to an angle that can determine an object one meter in height at a distance of 1000 meters). Therefore, if a navigation chart gives the height of an object, by sighting on it and counting the number of MILs, you can determine how far away it is. Here are the two formulas (note use of metric units):

1) To measure distance when the height is known:

Object height (m)

x 1000 m = Distance in meters

Scale Reading

 

2) To measure object height when the distance is known:

Distance (m) x Scale Reading = Object height in meters 1000

Ranging

Reticle



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Bushnell 13-7507 instruction manual Ranging Reticle, HOW to USE the Reticle, Object height m, Scale Reading

13-7507 specifications

The Bushnell 13-7507 is a versatile and rugged spotting scope designed for outdoor enthusiasts, bird watchers, and hunters who prioritize clarity and precision in their observations. Known for its reliability and superior optical performance, this model from Bushnell caters to those who seek to enhance their viewing experiences in various settings.

One of the standout features of the Bushnell 13-7507 is its powerful 20-60x magnification capability. This wide range allows users to zoom in on distant subjects with remarkable detail, making it ideal for spotting wildlife or observing far-off landscapes. The scope is equipped with a large 60mm objective lens that ensures maximum light transmission, which is crucial for maintaining brightness and color accuracy, especially during dawn or dusk when lighting conditions are less than optimal.

The design of the Bushnell 13-7507 incorporates fully multi-coated optics, which minimize light loss and provide crisp, clear images. This technology significantly reduces glare and enhances image quality, making it easier to identify subtle features in the field. Additionally, the scope offers a straight-barrel configuration, providing quick target acquisition and ease of use, a critical factor for those needing to act quickly.

Durability is a hallmark of the Bushnell 13-7507, as it features a robust, waterproof, and fog-proof construction. This ensures that the unit remains operational in adverse weather conditions, making it an excellent companion for outdoor adventures. The rubber armor coating provides an extra layer of protection against impacts and slips, further enhancing its ruggedness.

Ease of portability is another advantage, as the lightweight build of the scope allows it to be conveniently carried during long hikes or extended outdoor excursions. The built-in tripod mount allows for steady viewing over longer periods, especially beneficial when observing wildlife.

The Bushnell 13-7507 also includes a 45-degree angled eyepiece, which offers a comfortable viewing angle, reducing neck strain during prolonged observations. This ergonomic design further solidifies its status as an exceptional spotting scope.

In summary, the Bushnell 13-7507 stands out for its impressive magnification, excellent light transmission, durability, and user-friendly features, making it a highly sought-after tool for outdoor observation and exploration. Whether you are a wildlife enthusiast, a seasoned hunter, or simply an admirer of nature, this spotting scope is engineered to meet various observational needs.