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A telescopic sight, commonly called a scope informally, is an optical sighting device based on a refracting telescope. [ 1] It is equipped with some form of a referencing pattern – known as a reticle – mounted in a focally appropriate position in its optical system to provide an accurate point of aim.
Leupold & Stevens, Inc. / 45.52380; -122.82243. Leupold & Stevens, Inc. is an American manufacturer of telescopic sights, red dot sights, binoculars, rangefinders, spotting scopes, and eyewear located in Beaverton, Oregon, United States. The company, started in 1907, is on its fifth generation of family ownership. [ 2][ 3]
The Redfield scope mount removed the rear peep sight that was standard on the M1903A3. The scope used on the M1903A4 was a Weaver Model 330 or 330C, which was a 2.75x telescopic sight. The receivers were tested by Remington Arms and those that were deemed best, meaning those closest to design specifications were selected to become M1903A4s.
26. +. 3⁄4 in sight radius. The M21 Sniper Weapon System (SWS) in the US Army is a national match grade M14 rifle, selected for accuracy, and renamed the M21 rifle. [ 7] The M21 uses a commercially procured 3–9× variable power telescopic sight, modified for use with the sniper rifle. [ 8] It is chambered for the 7.62×51mm NATO cartridge .
A C79 Optical Sight. The C79 optical sight ( SpecterOS3.4x) is a telescopic sight manufactured by Elcan. A variant, the M145 Machine Gun Optic is in use by the US military. It is 3.4×28, meaning 3.4x magnification, and a 28mm diameter objective lens. A tritium illuminated reticle provides for normal and low-light conditions sighting. [ 1]
A view through the Mark III Free Gun Reflector Sight, first produced in 1943, used on British army guns, naval guns, and as a pilot sight and a defensive gun sight on aircraft. The reticle image in this sight is produced by an optical collimator bounced off a beam splitter. The dot remains on the target even though the viewer's head is moved ...
Robert Ray Redfield Jr. [1] [2] was born on July 10, 1951. His parents, Robert Ray Redfield (1923–1956, from Ogden) and Betty, née Gasvoda, [1] were both scientists at the National Institutes of Health, [3] where his father was a surgeon and cellular physiologist at the National Heart Institute; [1] Redfield's career in medical research was influenced by this background. [3]
J. Howard Redfield. John Howard Redfield (June 8, 1879 – April 17, 1944) was an American mathematician, best known for discovery of what is now called Pólya enumeration theorem (PET) in 1927, [1] ten years ahead of similar but independent discovery made by George Pólya. Redfield was a great-grandson of William Charles Redfield, one of the ...
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