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This is a list of the National Register of Historic Places entries in Columbus, Ohio, United States.The National Register is a federal register for buildings, structures, and sites of historic significance.
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.
A rail system mounted on top of a SIG SG 550 A dovetail rail on a rifle receiver for mounting a sight. A rail integration system (RIS; also called a rail accessory system (RAS), rail interface system, rail system, mount, base, gun rail, or simply a rail [1]) is a generic term for any standardized attachment system for mounting firearm accessories via bar-like straight brackets (i.e. "rails ...
Among scopes for rail mounts, the 22.5-degree V-shaped Zeiss rail is the most prevalent standard. It was introduced in 1990. After the patent expired in 2008, compatible scopes have been offered from manufacturers such as Blaser, [1] Leica, Minox, Meopta, Nikon, [2] Noblex (formerly Docter [3]), Schmidt & Bender [4] and Steiner. [5]
The Convex rail uses matching slide-in mount fasteners to connect the riflescope to the gun and offers the possibility to tilt the scope up to 1° to the left or right. Since 2017 [12] Schmidt & Bender also offer the Zeiss rail system on some of their hunting telescopic sights in the following series: Exos, Polar T96 and Stratos. The telescopic ...
It is similar in concept to the earlier commercial Weaver rail mount used to mount telescopic sights, but is taller and has wider slots at regular intervals along the entire length. The MIL-STD-1913 locking slot width is 0.206 in (5.23 mm). The spacing of slot centres is 0.394 in (10.01 mm) and the slot depth is 0.118 in (3.00 mm). [8]
The Hartman Stock Farm Historic District was a historic district in Columbus, Ohio. The district was listed on the National Register of Historic Places from 1974 to 2022. [1] [2] The district is the site of Hartman Farm, a 5,000-acre farm founded by Samuel B. Hartman in 1903.
In the same year, James Lind and Captain Alexander Blair described a gun which included a telescopic sight. [5] The first rifle sight was created in 1835 -1840. In the book The Improved American Rifle, written in 1844, British-American civil engineer John R. Chapman described a sight made by gunsmith Morgan James of Utica, New York. Chapman ...