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A Leupold telescopic sight mounted on a dovetailed rifle receiver via two scope rings From left: A sketch of a cross section on a Zeiss rail and ring mount, both with a Picatinny rail interface. Scope mounts are rigid implements used to attach (typically) a telescopic sight or other types of optical sights onto a firearm .
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. [3] [4] In 1962, Leupold invented the Duplex Reticle, which most riflescopes now use. [6]
Some scope bases, such as Leupold & Stevens's proprietary STD mounts, use socketed bases screw-fastened to the receiver and a twistlock-like interface to secure the accompanied scope rings. An alternative design that has remained popular since the early 20th century is the dovetail rail , which is a straight metal flange with an inverted ...
Using an LED as a reticle is an innovation that greatly improves the reliability and general usefulness of the sight: there is no need for other optical elements to focus light behind a reticle; the mirror can use a dichroic coating to reflect just the red spectrum, passing through most other light; and the LED itself is solid state and ...
A painting by British artist George Stubbs is expected to sell for up to £2 million ($2.5 million) in London next week, as it comes to auction for the first time in more than 50 years.. The 18th ...
Reticle dot size 0.6 mrad (2.1 MOA) 0.8 mrad (2.8 MOA) 1.0 mrad (3.4 MOA) 1.2 mrad (4.1 MOA) 1.6 mrad (5.5 MOA) 1.8 mrad (6.2 MOA) 2.2 mrad (7.5 MOA) Range 10 m 6 mm 8 mm 10 mm 12 mm 16 mm 18 mm 22 mm Range 20 m 12 mm 16 mm 20 mm 24 mm 32 mm 36 mm 44 mm Range 50 m 30 mm 40 mm 50 mm 60 mm 80 mm 90 mm 110 mm
Congress required all federal agencies to submit annual financial reports in 1990. The Pentagon finally got around to complying in 2018, and it still hasn't passed an audit.
Lake effect snow is slamming the Great Lakes, with seven states from Wisconsin to New York under snow alerts on Monday. So far, snow totals have reached 65 inches in Barnes Corners, New York; 30 ...
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