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Vortex Optics is a DBA of Sheltered Wings, Inc., which was incorporated in Wisconsin in 1989. Sheltered Wings, Inc. DBA Vortex Optics began in 2002. In 2022 after extensive research, testing and reviews Vortex became an official supplier and contractor to the American Military as the U.S. Army selected Vortex‘s XM-157 fire control system for its Next Generation Squad Weapon program.
The M49 Spotting Scope, also known as the M49 Observation Telescope, [1] is a multipurpose scope system used primarily for long range marksmanship observation. It can also be used for observing the effects of artillery fires, wind direction, [ 2 ] and other general purposes.
This is a list of United States Army fire control, and sighting material by supply catalog designation, or Standard Nomenclature List (SNL) group "F".The United States Army Ordnance Corps Supply Catalog used an alpha-numeric nomenclature system from about the mid-1920s to about 1958.
Spotting scope eyepieces are usually interchangeable to adapt for different magnifications, or may have variable zoom to give a range of magnifications. Magnifications less than 20× are unusual, as are magnifications more than 60× since the latter can lead to poorer image brightness, a narrow field of view and too much image shaking, even on ...
The 2020 Frisco Bowl was originally set to be contested by the SMU Mustangs, from The American, and the UTSA Roadrunners, from Conference USA. [7] [8] The game was slated to be the first matchup between the two teams. [9] Two days after the matchup was announced, the 2020 edition was canceled due to COVID-19 concerns with the SMU football team ...
In long-range spotting, firebrands are often carried by a convection column away from the main fire area. [14] Diagram of how spotting occurs and the factors contributing to spotting: Diagram of how spotting occurs and the factors contributing to spotting. Many Torching: This occurs when the fire burns the foliage of trees from the bottom up. [9]