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  2. PSO-1 - Wikipedia

    en.wikipedia.org/wiki/PSO-1

    The reticle features a stadiametric rangefinder, ranging out to 400 meters and a single chevron as an aiming point with vertical stadia lines for a windage hold. [6] The PSO-1M2-1 has also been made in a version for the 7.62×39mm intermediate cartridge, which has the range drum marked for up to 1,000 meters. This version has a 400 m stadia ...

  3. Stadiametric rangefinding - Wikipedia

    en.wikipedia.org/wiki/Stadiametric_rangefinding

    Stadiametric rangefinding, or the stadia method, is a technique of measuring distances with a telescopic instrument.The term stadia comes from a Greek unit of length Stadion (equal to 600 Greek feet, pous) which was the typical length of a sports stadium of the time.

  4. Specter (sight) - Wikipedia

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

    The optic has two standard reticles: both are a cross, feature a range finder out to 600 m (656 yd) for 5.56x45 and 800 m (875 yd) for 7.62x51, where they differ is in the bulletdrop design, where the one called CX5395/CX5396 uses circles to denote the range, while the other called CX5455/CX5456 uses lines and also features lines for windage.

  5. Adjustable Ranging Telescope - Wikipedia

    en.wikipedia.org/wiki/Adjustable_Ranging_Telescope

    The Adjustable Ranging Telescope (ART) is a weapons sighting system typically used as a military rifle scope which was initially designed for service in the Vietnam War. It was developed and patented by James M. Leatherwood. It combines a range-finding scale inside of a telescopic sight with an adjustable cam integrated into the scope's mount ...

  6. Bushnell Corporation - Wikipedia

    en.wikipedia.org/wiki/Bushnell_Corporation

    Bushnell makes binoculars, telescopes, spotting scopes, riflescopes, red dot sights, GPS devices, laser rangefinders, game cameras, night-vision devices and other optical equipments. Company history [ edit ]

  7. Advanced Combat Optical Gunsight - Wikipedia

    en.wikipedia.org/wiki/Advanced_Combat_Optical...

    The first ACOG model, known as the TA01, was released in 1987. [3] [4] An example was tested on the Stoner 93 in the early 1990s by the Royal Thai Armed Forces. [5]In 1995, United States Special Operations Command selected the 4×32 TA01 as the official scope for the M4 carbine and purchased 12,000 units from Trijicon. [6]

  8. AN/PVS-4 - Wikipedia

    en.wikipedia.org/wiki/AN/PVS-4

    The optics are considered exceptional, even by contemporary standards and the biggest drawback compared to modern scopes is the weight. Although the AN/PVS-4 has not had a great deal of cultural impact, its legacy of high quality night vision has become a staple of movies and television shows which often do not show real equipment.

  9. Telescopic sight - Wikipedia

    en.wikipedia.org/wiki/Telescopic_sight

    The reason why telescopic sights intended for short range use are often equipped with parallax compensation is that at short range (and at high magnification) parallax errors become proportionally more noticeable. A typical telescopic sight objective lens has a focal length of 100 millimeters (3.9 in). An optically ideal 10× sight in this ...