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  2. Diopter sight - Wikipedia

    en.wikipedia.org/wiki/Diopter_sight

    Rear, rotating diopter drum sight of a SIG SG 550 service rifle.The viewing aperture above the "3" (denoting the 300 m setting) can be seen. The diopter is in principle a vertically and horizontally (elevation and windage) adjustable occluder with a small hole (aperture), and is placed close in front of the shooter's aiming eye.

  3. RS Recommends: The Best Fire Pits We Found on Amazon - AOL

    www.aol.com/rs-recommends-best-fire-pits...

    A fire pit instantly enhances the atmosphere of any backyard, patio, porch or campsite, while providing warmth when the sun goes down. The best fire pits can also double as grills, say, if you ...

  4. Iron sights - Wikipedia

    en.wikipedia.org/wiki/Iron_sights

    Front sights vary in design but are often a small post, bead, ramp, or ring. There are two main types of rear iron sight: 'open sights', which use an unenclosed notch, and 'aperture sights', which use a circular hole. Nearly all handguns, as well as most civilian, hunting, and police long guns, feature open sights.

  5. Modern competitive archery - Wikipedia

    en.wikipedia.org/wiki/Modern_competitive_archery

    A typical Field-crossbow. Equipment – Field-crossbows are designed to specifications laid-down by the International Crossbow-shooting Union (IAU). These rules limit the power, weight and physical dimensions of equipment for use in archery-style competition. Other restrictions include the use of mechanical triggers and open sights only.

  6. List of the United States Army fire control and sighting ...

    en.wikipedia.org/wiki/List_of_the_United_States...

    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.

  7. Arrowslit - Wikipedia

    en.wikipedia.org/wiki/Arrowslit

    Inside of an arrowslit, where an archer would stand, at Corfe Castle. Exterior view of arrowslits in the Bargate gatehouse in Southampton. An arrowslit (often also referred to as an arrow loop, loophole or loop hole, and sometimes a balistraria [1]) is a narrow vertical aperture in a fortification through which an archer can launch arrows or a crossbowman can launch bolts.

  8. Sight (device) - Wikipedia

    en.wikipedia.org/wiki/Sight_(device)

    On weapons, these sights are usually formed by rugged metal parts, giving them the name "iron sights", [4] as distinct from optical or computing sights. [5] On many types of weapons they are built-in and may be fixed, adjustable, or marked for elevation , windage , target speed, etc. [ 3 ] They are also classified in forms of notch (open sight ...

  9. Thermal weapon sight - Wikipedia

    en.wikipedia.org/wiki/Thermal_weapon_sight

    A thermographic weapon sight, thermal imagery scope or thermal weapon sight is a sighting device combining a compact thermographic camera and an aiming reticle. [1] They can be mounted on a variety of small arms as well as some heavier weapons. [2] As with regular ultraviolet sensors, thermal weapon sights can operate in total darkness.

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