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  2. 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.

  3. Diopter sight - Wikipedia

    en.wikipedia.org/wiki/Diopter_sight

    A diopter sight is an aperture sight component used to assist the aiming of ranged weapons, mainly firearms, airguns, and crossbows. Diopters function to precisely align the shooter's eye with the front sight and the target, while also producing beneficial optical effects for accurate aiming.

  4. 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.

  5. 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.

  6. 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 ...

  7. 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.

  8. Coincidence rangefinder - Wikipedia

    en.wikipedia.org/wiki/Coincidence_rangefinder

    Coincidence rangefinders were important elements of fire control systems for long-range naval guns and land-based coastal artillery circa 1890–1960. They were also used in rangefinder cameras. A stereoscopic rangefinder looks similar, but has two eyepieces and uses a different principle, based on binocular vision. The two can normally be ...

  9. Collimator sight - Wikipedia

    en.wikipedia.org/wiki/Collimator_sight

    The basic layout of a collimator sight is a closed tube with a lens at its open end and a luminous reticle mounted near the closed end at the focus of the lens, creating an optical collimator. The reticle is illuminated by an electronic light source (an incandescent light bulb or, more recently, a light-emitting diode ) or by ambient light ...

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