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  2. Red dot sight - Wikipedia

    en.wikipedia.org/wiki/Red_dot_sight

    A red dot sight is a common classification [1] for a non-magnifying reflector (or reflex) sight that provides an illuminated red dot to the user as a point of aim. A standard design uses a red light-emitting diode (LED) at the focus of collimating optics , which generates a dot-style illuminated reticle that stays in alignment with the firearm ...

  3. 1951 USAF resolution test chart - Wikipedia

    en.wikipedia.org/.../1951_USAF_resolution_test_chart

    A USAF 1951 resolution chart in PDF format is provided by Yoshihiko Takinami. This chart should be printed such that the side of the square of the 1st element of the group -2 should be 10 mm long. USAF 1951 Resolution Target Further explanations and examples; Koren 2003: Norman Koren's updated resolution chart better suited for computer analysis

  4. Aeronautical chart conventions (United States) - Wikipedia

    en.wikipedia.org/wiki/Aeronautical_chart...

    A sectional chart is a two-sided chart created from a Lambert Conformal Conic Projection [1] with two defined standard parallels. The scale is 1:500,000, with a contour interval of 500 feet. The size of each sectional is designed to be "arm's width" when completely unfolded.

  5. Aimpoint CompM2 - Wikipedia

    en.wikipedia.org/wiki/Aimpoint_CompM2

    Colt M4 carbine with M68 Close Combat Optic and back-up sight. The CompM2 is a battery-powered, non-magnifying red dot type of reflex sight for firearms manufactured by Aimpoint AB . It was first introduced in the U.S. Armed Forces in 2000, [ 1 ] designated as the M68 Close Combat Optic (M68 CCO; NSN : 1240-01-411-1265).

  6. Aimpoint CompM4 - Wikipedia

    en.wikipedia.org/wiki/Aimpoint_CompM4

    The U.S. Army's newest version of the M68 Close Combat Optic (CCO) is the Aimpoint CompM4. The shooter's end of the CompM4 with the power control knob An M4 carbine with a Picatinny rail system on the upper receiver and four-sided handguard, showing a GPS-02 "Grip Pod", a type of vertical grip that has a deployable bipod inside the handle and an M68 CCO optical sight C7NLD assault rifle with ...

  7. 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 ...

  8. Specter (sight) - Wikipedia

    en.wikipedia.org/wiki/Specter_(sight)

    The solution found by ELCAN was to merge a telescopic sight with a red dot sight by using a rotating lens one side at 1× magnification the other in 4× that could be rotated by the turn of a lever. Development was finished in 2006 where it won the bid 9–1 and was adopted as the SU-230/PVS.

  9. Sight magnifier - Wikipedia

    en.wikipedia.org/wiki/Sight_magnifier

    The pictured magnifier is flipped in, and is magnifying the view through the sight. [a] A sight magnifier is an optical telescope that can be paired with a non-magnifying optical sight on a weapon to create a telescopic sight. [1] [2] They work with the parallel collimated reticle image produced by red dot sights and holographic weapon sights.