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  2. Weaver rail mount - Wikipedia

    en.wikipedia.org/wiki/Weaver_rail_mount

    The locking bar system allows for even stress to be distributed and prevent canting of the scope mount. Another form of scope canting is caused by the rings themselves. Many Weaver-type mounts, including many Picatinny-type scope rings and even the Redfield Type, have either two or four screws on top of the scope ring that hold the scope in place.

  3. Scope mount - Wikipedia

    en.wikipedia.org/wiki/Scope_mount

    Scope mounts are rigid implements used to attach (typically) a telescopic sight or other types of optical sights onto a firearm. The mount can be made integral to the scope body (such as the Zeiss rail) or, more commonly, an external fitting that clamp onto the scope tube via screw-tightened rings (similar to pipe shoes). The scope and mount ...

  4. Ballista - Wikipedia

    en.wikipedia.org/wiki/Ballista

    Developed from earlier Greek weapons, it relied upon different mechanics, using two levers with torsion springs instead of a tension prod (the bow part of a modern crossbow). The springs consisted of several loops of twisted skeins. Early versions projected heavy darts or spherical stone projectiles of various sizes for siege warfare.

  5. Dovetail rail - Wikipedia

    en.wikipedia.org/wiki/Dovetail_rail

    The SIG Sauer 200 STR has an 11 mm dovetail on the receiver for mounting a diopter rear sight or a scope sight, either directly or via a Picatinny rail adapter.. Dovetails come in several different types and sizes depending on manufacturer, but the most common are the 11 mm and 3 ⁄ 8 inch (9.5 mm).

  6. PSO-1 - Wikipedia

    en.wikipedia.org/wiki/PSO-1

    The scope body is sealed and filled with nitrogen, which prevents fogging of optics and was designed to function within a -50 °C to 50 °C temperature range. For zeroing the telescopic sight the reticle can be adjusted by manipulating the elevation and windage turrets in 5 centimetres (2.0 in) at 100 metres (109 yd) (0.5 mil or 1.72 MOA ...

  7. Peenemünde Army Research Center - Wikipedia

    en.wikipedia.org/wiki/Peenemünde_Army_Research...

    Operation Crossbow (Bombing of Peenemünde in World War II) The Peenemünde Army Research Center (German: Heeresversuchsanstalt Peenemünde , [ a ] HVP ) was founded in 1937 as one of five military proving grounds under the German Army Weapons Office ( Heereswaffenamt ).

  8. Siege engine - Wikipedia

    en.wikipedia.org/wiki/Siege_engine

    The earliest documented occurrence of ancient siege-artillery pieces in China was the levered principled traction catapult and an 8 ft (2.4 m) high siege crossbow from the Mozi (Mo Jing), a Mohist text written at about the 4th – 3rd century BC by followers of Mozi who founded the Mohist school of thought during the late Spring and Autumn ...

  9. Chinese siege weapons - Wikipedia

    en.wikipedia.org/wiki/Chinese_siege_weapons

    Mozi described them as defensive weapons placed on top the battlements. The Mohist siege crossbow was described as humongous device with frameworks taller than a man and shooting arrows with cords attached so that they could be pulled back. By the Han dynasty, crossbows were used as mobile field artillery and known as "Military Strong Carts". [2]

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