United States anti-aircraft guns used in Maryland during World War I. The guns are manned by 61st C.A.C. (Coastal Artillery Corps). An anti-aircraft gun which was used in the defense of Paris in 1918. Various views of the gun. A 105mm anti-aircraft gun with muzzle velocity 3000ft. and vertical range of 7 miles. The gun crew fires the gun.
U.S. 30-caliber machine guns fired in Aberdeen Proving Ground, Maryland. Four 30-caliber machine guns on multiple mount with gun. The Vikers Data Computer directs the firing. The gun crew fires the machine guns.
U.S. 37mm automatic anti-aircraft gun fired in Aberdeen Proving Ground, Maryland. The 37mm automatic anti-aircraft mobile mount in a traveling position. The anti-aircraft gun is manned by the gun crew. An officer loads shells. The gun is fired.
A 3-inch anti-aircraft gun T1 fired in Aberdeen Proving Ground, Maryland. The 3-inch mobile anti-aircraft gun T1 with a muzzle velocity of 2600 feet per second in a traveling position. The gun is emplaced by the members of the crew. A river can be seen in the background. The gun is fired at a towered target by the gun crew. The target is brought down from a height of 9000 feet. Members of the crew pose.
U.S. height finders used in World War I. The Barr and Stroud anti-aircraft height finder used in Aberdeen Proving Ground, Maryland. Members of the crew use the height finders. The crew uses the Bausch and Lomb 8-foot height finder.
A 3-inch anti-aircraft gun fired at a target in Aberdeen Proving Ground, Maryland. The 3-inch anti-aircraft gun equipped with torque amplifiers for distant control is operated by Ordnance Data Computer T 1. A battery of four 3-inch anti-aircraft guns. The gun crew fires guns at the towed target. Shells burst around the target range at a range of 8500 feet. The target falls after a hit.
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