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There are many variations of reticle pattern; this article concerns itself mainly with the most rudimentary reticle: the crosshair. Crosshairs are typically represented as a pair of perpendicularly intersecting lines in the shape of a cross, "+", though many variations of additional features exist including dots, posts , concentric circles ...
Viewing through a duplex crosshair reticle. The crosshair is the most rudimentary reticle, represented as a pair of smooth, perpendicularly intersecting lines in the shape of a "+", and the crosshair center is used for aiming the weapon.
Crosshair (disambiguation) A crosshair is another name for a reticle. Other meanings include: A song by the Danish band Blue Foundation. Cross Hair (G.I. Joe), fictional G.I. Joe character. Crosshairs (Transformers), several robot superhero characters in the Transformers robot superhero franchise.
CT-9904, or "Crosshair", is a deformed clone trooper and member of Clone Force 99. He is the team's sniper , possessing genetic mutations that give him exceptional eyesight. He is the only member of Clone Force 99 whose biochip is activated when Order 66 is issued, causing him to turn on his squadmates after they rebel against the newly formed ...
The bombardier waited for the target to line up with a crosshair in the telescope. When it did, the timer was started, and the bombardier rotated the telescope around its vertical axis to track the target as they flew toward it. This movement was linked to a second crosshair through a gearing system.
Crosshair. The crosshair is the most basic reticle for the AN/PVS-4 and is available as either a simple crosshair, A mildot crosshair or as an aimpoint crosshair. A simple crosshair reticle can be seen on the photo taken through a surveillance AN/PVS-4. The image was taken during a wide-area blackout on a moonless night in a remote suburban area.
Usage. Stadia marks on a crosshair while viewing a metric levelling rod. The top mark is at 1.500 m and the lower is at 1.345 m. The difference between the rod readings is 0.155 m, yielding a distance to the rod of 15.5 m. A typical surveyor's instrument reticle has two pairs of stadia marks.
An instrument equipped for stadia work has two horizontal stadia marks spaced equidistant from the center crosshair of the reticle. The interval between stadia marks in most surveying instruments is 10 mrad and gives a stadia interval factor of 100.
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Viète. de Moivre. Euler. Fourier. v. t. e. In trigonometry, trigonometric identities are equalities that involve trigonometric functions and are true for every value of the occurring variables for which both sides of the equality are defined. Geometrically, these are identities involving certain functions of one or more angles.