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22 relations: Artillery sound ranging, Coast Artillery fire control system, Coincidence rangefinder, Fort Amador, Fort MacArthur, Fort Randolph (Panama), Gun laying, Harbor Defense Command, Hydraulic recoil mechanism, Inclinometer, Indirect fire, Interrupted screw, List of U.S. Army weapons by supply catalog designation, Milliradian, Panama Canal Railway, Panama Canal Zone, Railway gun, United States Army, Watervliet Arsenal, World War I, World War II, 14"/50 caliber railway gun.
Artillery sound ranging
In land warfare, artillery sound ranging is a method of determining the coordinates of a hostile battery using data derived from the sound of its guns (or mortar or rockets) firing.
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Coast Artillery fire control system
In the U.S. Coast Artillery, the term fire control system was used to refer to the personnel, facilities, technology and procedures that were used to observe designated targets, estimate their positions, calculate firing data for guns directed to hit those targets, and assess the effectiveness of such fire, making corrections where necessary.
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Coincidence rangefinder
A coincidence rangefinder (stereoscopic, parallax, or split-image rangefinder) is a type of rangefinder that uses mechanical and optical principles to allow an operator to determine the distance to a visible object.
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Fort Amador
Fort Amador (Fuerte Amador) and Fort Grant were former United States Army bases built to protect the Pacific (southern) end of the Panama Canal at Panama Bay.
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Fort MacArthur
Fort MacArthur is a former United States Army installation in San Pedro, Los Angeles, California (now the port community of Los Angeles).
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Fort Randolph (Panama)
Fort Randolph (Panama) was a Coast Artillery Corps fort built to defend the northern end of the Panama canal in conjunction with Fort Sherman.
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Gun laying
Gun laying is the process of aiming an artillery piece, such as a gun, howitzer or mortar, on land or at sea, against surface or air targets.
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Harbor Defense Command
A Harbor Defense Command was a military organization of the United States Army Coast Artillery Corps designated in 1925 from predecessor organizations dating from circa 1895.
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Hydraulic recoil mechanism
A hydraulic recoil mechanism is a way of limiting the effects of recoil and adding to the accuracy and firepower of an artillery piece.
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Inclinometer
An inclinometer or clinometer is an instrument used for measuring angles of slope (or tilt), elevation, or depression of an object with respect to gravity.
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Indirect fire
Indirect fire is aiming and firing a projectile without relying on a direct line of sight between the gun and its target, as in the case of direct fire.
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Interrupted screw
An interrupted screw or interrupted thread is a mechanical device typically used in the breech of artillery guns.
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List of U.S. Army weapons by supply catalog designation
This is a historic list of U.S. Army weapons and materiel, by their Standard Nomenclature List (SNL) group and individual designation — an alpha-numeric nomenclature system used in the U.S. Army Ordnance Corps Supply Catalogues used from about the mid-1920s to about 1958.
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Milliradian
A milliradian, often called a mil or mrad, is an SI derived unit for angular measurement which is defined as a thousandth of a radian (0.001 radian).
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Panama Canal Railway
The Panama Canal Railway (Ferrocarril de Panamá) is a railway line that runs parallel to the Panama Canal, linking the Atlantic Ocean to the Pacific Ocean in Central America.
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Panama Canal Zone
The Panama Canal Zone (Zona del Canal de Panamá) was an unincorporated territory of the United States from 1903 to 1979, centered on the Panama Canal and surrounded by the Republic of Panama.
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Railway gun
A railway gun, also called a railroad gun, is a large artillery piece, often surplus naval artillery, mounted on, transported by, and fired from a specially designed railway wagon.
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United States Army
The United States Army (USA) is the land warfare service branch of the United States Armed Forces.
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Watervliet Arsenal
The Watervliet Arsenal is an arsenal of the United States Army located in Watervliet, New York, on the west bank of the Hudson River.
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World War I
World War I (often abbreviated as WWI or WW1), also known as the First World War, the Great War, or the War to End All Wars, was a global war originating in Europe that lasted from 28 July 1914 to 11 November 1918.
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World War II
World War II (often abbreviated to WWII or WW2), also known as the Second World War, was a global war that lasted from 1939 to 1945, although conflicts reflecting the ideological clash between what would become the Allied and Axis blocs began earlier.
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14"/50 caliber railway gun
The 14"/50 caliber railway guns were spare US Navy Mk 4 14 inch/50 caliber guns mounted on railway cars and operated by US Navy crews in France in the closing months of World War I.
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References
[1] https://en.wikipedia.org/wiki/14-inch_M1920_railway_gun
