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  2. 1PN51 - Wikipedia

    en.wikipedia.org/wiki/1PN51

    1PN51 (Russian: 1ПН51) is the GRAU index for a Soviet designed passive night scope for a range of Soviet designed small arms and grenade launchers. 1PN is the GRAU index of night vision devices, where PN stands for Nochnoy Pritsel (Russian: Ночной прицел) meaning night sight.

  3. SKS - Wikipedia

    en.wikipedia.org/wiki/SKS

    The front sight has a hooded post. The rear sight is an open notch type which is adjustable for elevation from 100 to 1,000 metres (110 to 1,090 yd). There is also an all-purpose "battle" setting on the sight ladder (marked "П", for "Прямой выстрел", meaning "Straight shot"), set for 300 metres (330 yards).

  4. Argus retinal prosthesis - Wikipedia

    en.wikipedia.org/wiki/Argus_retinal_prosthesis

    The Argus II was initially available at a limited number of clinics in France, Germany, Italy, the Netherlands, the United Kingdom and Saudi Arabia, at an EU market price of US$115,000. [13] When the Argus II launched in the United States in February 2013, Second Sight announced that it would be priced at around $150,000, excluding the cost of ...

  5. 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 ...

  6. Commodity price index - Wikipedia

    en.wikipedia.org/wiki/Commodity_price_index

    The first index to track commodity futures prices was the Dow Jones futures index which started being listed in 1933 (backfilled to 1924). [1] The next such index was the CRB ("Commodity Research Bureau") Index, which began in 1958. Due to its construction both of these were not useful as an investment index.

  7. AT4 - Wikipedia

    en.wikipedia.org/wiki/AT4

    Gunners are often trained to break off the sights after use, in order to prevent other soldiers from mistaking used launchers for unused ones. Unlike the heavier Carl Gustaf, the AT4 outer tube is built to take the stress of just one firing; it is not reusable and cannot be reloaded. The AT4 can mount an optical night sight on a removable ...

  8. Reflector sight - Wikipedia

    en.wikipedia.org/wiki/Reflector_sight

    A reflector sight or reflex sight is an optical sight that allows the user to look through a partially reflecting glass element and see an illuminated projection of an aiming point or some other image superimposed on the field of view.

  9. Tritium radioluminescence - Wikipedia

    en.wikipedia.org/wiki/Tritium_radioluminescence

    A 2007 report by the UK government's Health Protection Agency Advisory Group on Ionizing Radiation declared the health risks of tritium exposure to be double that previously set by the International Commission on Radiological Protection, [8] but encapsulated tritium lighting devices, typically taking the form of a luminous glass tube embedded ...