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The backstaff is a navigational instrument that was used to measure the altitude of a celestial body, in particular the Sun or Moon. When observing the Sun, users kept the Sun to their back (hence the name) and observed the shadow cast by the upper vane on a horizon vane.
3"/50 caliber gun (World War I, interbellum, World War II, Korean War, Cold War) 5"/25 caliber gun (interbellum, World War II) 5"/38 caliber gun (interbellum, World War II, Korean War, Cold War) 6"/47 Mark 16 and 17 gun (Cold War, Korean War) 75 mm Gun M1916 (World War I) 75 mm gun M1897 (World War I) 3-inch M1917 gun (World War I, interbellum ...
A para-athlete competing with a match air rifle A collection of lever-action, spring-piston air rifles. An air gun or airgun is a gun that uses energy from compressed air or other gases that are mechanically pressurized and then released to propel and accelerate projectiles, similar to the principle of the primitive blowgun.
Airforce Condor with CO 2 Tank. Airforce Airguns (aka.Gunpower Airguns in the United Kingdom) is an American manufacturer of pre-charged pneumatic air rifles.The company was founded in 1994 in Fort Worth, Texas.
Rheinmetall is believed to have received a contract in October 2019 worth around €210 million (US$204 million) for an unspecified number of Skymasters, radars, and guns including AHEAD programmable air-bursting ammunition that is effective against small targets out to a range of 4 km. Video released by the Qatari Ministry of Defence showed ...
The gun fires at 3,000 rounds per minute in short bursts of 10, 30, 60, or 100 rounds, or it can fire in continuous fire mode at a rate of 1,000 rounds per minute. [4] A linkless feed system is used. Its 20x102mm round gave it a low effective range of only 1,200 meters (3,900 ft), and its standard air-defense load of HEI-T rounds would self ...
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It was replaced by the back staff and later by the octant and sextant. Quadrant A very simple instrument which used a plumb bob. These instruments are also used to measure the angular distance between objects: Octant, invented in 1731. The first widely accepted instrument that could measure an angle without being strongly affected by movement.